yeah, I'd like one as well. I carried the .45-90 to the deer blind one day this past season, looked at a small buck, looked down at the 450gr bullets, and decided some things are just silly even if they are feasible.
I've come close to buying one of the 1980's Winchester Commemoratives in .38-55. They can be found in decent used condition and cost a heck of a lot less than pre-WWII lever guns. Nice cartridge in a single shot, too.
