Furncliff, funny, I literally just walked in from the garage, where I was ..... trimming 30 Carbine cases with a Forster Original and ..... a 3-in-1 trimmer attachment.
I seem to do episodic batch reloading with the 30 carbine (own two rifles, shoot occasionally but when I do, I am not shy about emptying up to 5 or 6 boxes' worth of it). It's been a while since I trimmed the cases.
But for me, the 3-in-1 is worth it. If you plan to 1) shoot a reasonably large amount of that caliber and 2) you plan to reload it for a few years at least, I'd say it's well worth it.
I will soon start using the 3-in-1 to trim 30-06 cases for Garand reloading. Unfortunately the 3-in-1 requires a longer base than the standard Original one, so I just bought one of those.
The efficiency of that one brief operation using the 3-in-1 (I use a power drill and the power attachment) that trims, deburs, and chamfers all at once really does add up. I set my calipers to my "max" case length that I want for 30 Carbine (usually 1.289), quickly check each case against that. Those that pass go into the "ready" bin, the others get the quick trim and then into that bin. I can prep a lot of brass in very little time that way.
Forster, like every other reloading equipment company I've dealt with so far, has been very good with support. I have a batch of never-used Lake City 30 Carbine brass of which a few cases had smaller-than-spec internal diameter. One of them got stuck on the 3-in-1 pilot. Sent it in along with a few other cases from that batch, Forster examined everything, removed the stuck case, and advised about the internal diameter issue. I belled all the LC cases after resizing, using the press charging die, and no more stuck cases (I expect the cases to be normal after one loading and firing).