Before I begin - all I say is my opinion only, and is being said out of the my careness and concerns, rather than hate or offence. I base my opinion on my experience only and it makes it true for myself alone. No offence or harm is intended.
I disagree. It is true that from the moment they know it there's no point in hiding it, but entering the kitchen with nothing but a diaper is still qiute a radical jump...
There are three main concerns I can think of in this situation.
The first one is the fact that as a DL, you look (or sometimes look) at diapers as sexual objects. I have a friend who is very open with her sexuality, but it's still something that has to be thoguht of. I have friends who definitly feel uncomfortable being next to her while she exposes large parts of her breast next to them or hanging around us with no shirt. Even if she DOESN'T see it as a sexual act, they get another feel from this act. The fact that they accept you as a diaper lover is great - I have few friends that I told them and they accept me, this is the greatest feel in the world - but you should care much about not forcing them into this world, they might accept it but seeing it and being forced to see it by having a friend wear a diaper only is a whole different situation. One of my friends whom to I told about my little side said she wouldn't care to see me diapred but asked me nor to use my diapers next to her since she feels uncomfortable with it even though she know I do it and hears a lot about it (this is a bit more extreme example, but it is very relevant). Acceptance and desires differ for most people. The fact I accept couples does not mean I want to see them kissing all the time (this is the simplest example by now) - it's a private act and I don't always want and feel comfortable with seeing it it the public space.
The second thing that I can imagine is that they might say they accept it and yet not be comfortable with it. My ex-girlfriend said it was weird but told me it is acceptable (I wrote long ago about her in this forum) but after a while she just took it all back and I discovered (much to my own surprise) that she thinks it's disgusting. People often say want they would want to feel but feel otherwise.
The third thing is this: If they really accept it, and are OK with you hanging aroung naked but a diaper, and you asked them if it's cool to wander around them this way, and they absolutly don't mind your sexuality and little side being that public, give them time. Being little/AB/DL is a matter that requires different atitude from people - let alone wearing next to them. Try to imagine it from their side - in twelve hours you changed to wearing just a diaper in the kitchen. Give them time to understand, explore slowly, let them get used to the idea and ask questions. I can almost assure this would garentee you a soft landing with the acceptance of this side of you. When people are given time to think about things they develope opinion, thoughts, things become regular and cool. I know that if I had my roomates accept my little side I would first have a talk with them about it, do a Q&A night or something, give them few days to amuse with the fact, make some jokes about it, and then, slowly start to explore and push the limits of the more public exposure. First show off a bit of the diaper, then try a skirt with it or no pants but boxers on, and a bit by bit making everyone including myself to be comfortable in the situation.
That the end of my rubbish for now - I hope I managed to get it clear and informative.