I have a Valmet works for me but
I have a Valmet 2 barrel set in 12ga. and .30-'06 works for me but it's not the stoutest possible. Putting the Valmet next to a Remington 3200 which uses the same sliding top cover design suggests the Valmet is nowhere near so robust as the Remington high use - competition - shotgun.
My first barrel set had a mismatch between the chambers on the rifle barrels - the lower barrel was really a sort of improved chamber - perhaps the reamer was just run in a little too far but in any event the headspace was excessive. Returned them with the receiver for a new set of barrels fitted at no charge and well regulated when I got them back.
Rimless cases are extractors only. Always wanted barrels in 9.3x74R which has ejectors.
Much of the utility to me has been having a true no tools takedown ruck not rook rifle
for rafting or other hard access hunting. The iron sight line - rib line is the same shotgun and rifle which I enjoy. Swing on claybirds or birds most of the year and transfer skills a little bit.
Scope mounts have been hard or impossible to find from time to time over the years - I bought my scope mount when I had a chance. No idea how common accessories might be today.
Browning has sold a few similar sets on an over/under shotgun from time to time over the years but I don't see very many around.
Today I use a Steyr Scout or Dragoon for many of the same applications for ease of transporting, carrying, handling and swing.