Guns
Is a matter of safety ear & eye protection as far as the banning two banders.
Infantry fires in ranks, That's their show , that and marching.
They don't want short guns, particularly the Carbines & and/or the shorter two banders in ranks.
One can't fall in with most Infantry units with a Henry. Show up with a Sharps Rifle and you can't fall in.
If you have one of these they will stick you on a distant flank away from the ranks.
They (Inf.) discourage pistols as well at Reenactments , same reason.
In fact the Inf. would like to discourage (pistols in plurals) among Cavalry, there is a movement to that end.
I have no idea how they will accept the new Roots Revolving Rifle or the Spencers.
Two banders ,Roots Revolving Rifle or the Spencers were issued to Companies of Infantry historically.
Your two band Enfield for Cavalry is fine though, great in fact, having dismounted and fighting on foot.
A little unwieldy on Horseback , but doable.
As a mounted cavalryman for 28 years, I carried as a Trooper a Sharps & on occasion a Henry, a saber and one pistol.
As an officer, I carried 3 pistols ( 2 in pommal holsters ) and the saber for years.
I also carried a Halls as a Dragoon in Tex/Mex events, and a Springfield carbine 45/70 in Indian war events.
Even a Kreg in some Span/Am events in 1997- 99.
Oh! and an 1812 Springfield Flintlock in a War of 1812 event.
what's the line ? been there, done that... got the T-shirt