A: You don't have to buy the reamer. You rent it.
B: There is brass available.....not from Starline just now, but it can be found. I loaded at least a hundred rounds the day after Christmas.
Personally, I love the round. It's like a shorter .45-70. While you're waiting to find the brass, you can still shoot .44 specials, .44 Russian and .44 magnums. Also, it doesn't cost a heck of a lot more to reload for than the .357.
I'd go do it.......OH!!.......I remember now.......I did it
Seriously, it is a sweet Handi baby.
I can't recommend it highly enough.
Pete