Rubber thermorun handles removed and some micarta added. Sounds sooooo simple.

Tangs were reduced on both, holes added for corby bolts, stainless guard put on the F1, micarta rebated for the tang with a 2mm spacer of red G10 between and choils added - all as requested.
It won't suit some, that's for sure, but they're a solid pair.

More pictures here:
http://stewartjlight-knives.blogspot.co.uk/2014/12/a-fallkniven-f1-and-cold-steel.html