For you all wanting to run the shorter 365 slide on the longer XL grip module, what exactly is the benefit you're after? I've shot both the 365 and XL upper on both lowers, and prefer the shooting dynamics of the longer slide quite a bit. Before shooting it, I thought the XL would be the worst of all worlds on such a concealable gun, but the optics cut made me try it. Now, I'd need a good reason to go back to the shorter slide on either grip module. You all are no dummies, so I must be missing something. Short of adding a comp and still fitting 365 XL holsters, what is it you prefer about the shorter 365 slide and barrel compared to the longer XL variant? If it's concealment, I get it. I've hated to give up ankle and pocket carry, but the XL conceals well enough for my purposes (formal and business casual attire) in a Spencer's Flex and a belly band that I am unwilling to give up the better shooting characteristics of the XL slide. What am I missing by ignoring the shorter slide?