As covered above, pull-up had been originally designed as a product for women and have expanded in application since that original design base. Also as stated above, those pull-ups with added side barriers are more likely to provide some help with leakage for men. But, that is heavily dependent on where the point of flow is aimed and the rate of flow. And, to highlight a comment above, placing the point of flow down will help.
IMHO, pull-ups are for very light /low flow (men, standing) and anything above that, one should consider a diaper.
I understand that Northshore has a high-end, pull-up with added side barriers, call their customer service and ask.
FYI: If you have any issues regarding hip joint movement, this product is not for you!!