I have a Curtis Tactical CT45K. I think it is about 7.5”, so maybe a tad longer than the Shaw .45 version. It is probably my favorite can and one of the only ones I can recall getting compliments on in terms of sound.
Regarding the Shaw graphics, I think they abandoned the big logo. My Shaw MK9k from a few years ago has a very small logo, and it was not by special request. Call and ask them if it is a concern. I am headed over there in the next week or so to pick up my recored .45 MK9, so I can ask then if I remember to.
For new stuff, there is a Dead Air Mojave in .45. It looks like more of a pistol can but is apparently a low back pressure offering. CAT is coming out with a .45 pistol can (Saigon Peacekeeper I think it’s called) and a bigger .45 can called the Bandito, though it’s not clear to me if it is meant for .45 caliber rifles or subguns. Based on the name I am guessing it is more for .45-70 and the like. I am not sure anyone is really using .45 SMGs these days, so it isn’t that surprising that there isn’t much development for them.