Throwing in my 0.02
You absolutely should buy a suppressor (buy a lot of them), but after an initial look at the Banish 30, that would not be the one I recommend for 2 primary reasons:
1) Weight: its really heavy, almost 2x the weight of other titanium cans in it's long configuration (~14oz), more on that in a second
2) Price: at basically $1000 its pretty expensive for what you get (direct thread only), the BOGO isnt a deal when there's better cans out there that are cheap enough you could probably just buy a rimfire can separately for the same total $ spent
And just generally, "User Serviceable"/"Modular" centerfire rifle cans are a gimmick. They are heavy (because the baffle stack isnt welded so the tube has to be thicker/reinforced at the end so the threads dont blow out) and they are loud because that thick outer tube/independent baffle stack eats up internal volume for the same form factor, that's why these are all 9" long (which just makes the weight worse). You dont need to be able to take a centerfire rifle can apart if it gets dirty, just do what Thunderbeast recommends and plug the end cap, fill it full of CLR and let it soak overnight (repeat if needed) you'll be good as new.
If you want something to run on several hosts, you would be way better off buying a quality 7" 30cal rifle can that has a tapered QD attachment/mount system on it, or at least something with the industry standard "Bravo" thread pattern (originally on the Silencerco Omega) so that you can source a good QD mount. Again, there's enough really good options in this space, most of which will be cheaper than the Banish and all probably a lot better performance (Thunderbeast, Q, Rugged, SASS, Silencerco... etc etc etc)