So far i have only loaned out males. and they were Lechies(Giant Gecko) not snakes. I have no problem loaning out snakes though. But it would have to be local.
And if i loan out a male i wouldn't expect a 50/50 split of the babies. Since the female does most of the work the other person should recieve most of the reward. And it also depends on the litter. If there is only 1 visual morph present i would just ask for a couple hets.
If someone wanted one of my females they would have to bring the male to me.