They look like TVM,s.
I've never been close to a TVM in person, but I can see from the photos what you mean. I suppose it makes sense, as they're basically aimed at the same niche of the market.
Here's a muzzle photo for comparison. This is a .36 Cal Lancaster:
A French-style Fowler - I've seen a few other users on this forum have something similar from Mr. Curtis:
A muzzle end shot of the John Brooks pattern rifle:
I don't remember what the gun on the left is, but it was big bore. Then (L-R) a .36 cal percussion Lancaster, John Brooks .36 shown above, Lancaster .36 shown above, and the Lancaster .32 shown above:
Also, if anyone feels that the pseudo 1911 flintlock photo doesn't belong here, I'll happily remove it. I just posted it as a fun curiosity that Tip had in his shop and thought users might find it amusing.