Personally not a fan of tanto style blades - but I really like my mini-razel - go figure.
I don't see it as a huge leap to go from sharpened swedge point blades to adding a line of Tanto style blades - I'm not likely to buy either, but am not going to shoot down others who might want to.
As to a scandi grind on a 3/16" thick blade - that doesn't sound terribly practical to me, either. Talk about an obtuse edge - it would be even steeper/thicker than the RC5 that people seem to be constantly complaining about.
Really? The woodlore Ray Mears knife is a 4mm scandi and I've not found it cumbersome at all. But it doesn't have a secondary bevel like the RC5. I think the woodlore inclusive angle is 28 degrees from memory.