Or for that matter BS/SR with Parry...
Okay you'd run out of end fairly quick 
OTOH Speaking as a long time Regen I hate SR as long after I'm chewing floorboards its still running around killing things. 
@Lost Ninja is offline today...
not to mention the katan wielder having build up..and claws wont get a tohit buff without a sucsessful hit...which is unlikely to happen with the katana or bs wielder using DA or parry
and when they do hit with build up its gona really hurt the claw/sr...thats why i wouldnt pick claws with SR i dont think it has the survivability to get in decent damage
Atleast without elude
"an eye for an eye can only lead to blindness"
"am i a clown for wearing a smile...or are you a fool to try and stop me?"
Degzy_G ProductionZ inc
My money is on the katana/sr vs a claws/sr. Divine avalanche really does limit claws options.
The claws could pack lucks, but so can the katana scrapper thats where its stalemate.