I confess I've never given the M6 much consideration as I already own a Savage 24 .22LR/20 Gauge. But I do think it's a shame that one more combo gun disappears from the market. For pure versatility you just can't beat it: .22 for small game, shotgun for birds, and slugs for large game. But the combos have always been more popular overseas than in the USA. I'm not sure why that is--marketing I suppose.
Regards, Vince