Got my proxy blade from Jim today. Thanks Jim! It really is sweet. It felt a little strange to me at first but it really grew on me after a little fondling. Mine is exactly like PK's. It is almost the same overall length as my DMDC but it is much lighter in the blade and very much heavier in the handle. It does have a much longer cutting edge, but I don't think it will match it in chopping tasks. It is definitely possible though. The swedge is very narrow at the top, but not very long. It also has a longer cutting edge than the BATAC, but of the 3 I think the BATAC would easily out-chop the others 2:1. The handle feels thicker than my mag FBM but it feels nice once you get used to it. They are actually about the same thickness at the swells, but the SAR5 is much thicker between swells.
If anybody has a RMD and SAR5 I'd love to see a side-by-side. I'll try to get some pics up with a DM and BATAC. I'm off to work now so it will have to be Tue or Wed.