I can imagine.

[ He has to imagine, in fact, since he's never felt anything remotely close to being scooped up and his soul tossed in a different body like that. ]

Surprising we can handle and train for. But if it were uncomfortable or painful in some way, then I'd let you go no problem.

[ Although it seems like that won't be the case, he just wants to keep offering it early on so Shinji doesn't feel stifled. ]

If you can handle it, then I'll make sure we're a good team.