We've lost two babies. And it does effect the guys, on a number of levels. The pain of losing the baby is certainly felt but also the pain of seeing their wife in anguish also effects them. Guys are fixers and miscarriage is something that they can't fix.
How this plays out is probably different for each guy. In our case, my husband took over a lot of the activities that I would've usually done. Not because I was physically or emotionally incapable but I think he just wanted to 1) let me hang and do whatever and 2) keep himself extra busy. I guess you could say that he walked on egg shells - not because I lashed out at him, but because he didn't know what else to do.
As far as trying again, I didn't see a difference frankly. He's been calm (come-what-may attitude) each time.
That's our experience.