there's nothing specificly wrong with the SK 1.5 however i think the 1.5 would serve a purposeful role if it were converted to a 1her (of course stats changed appropiately) mainly because SK are intended as a tanking class not a dps class, and there is a hefty loss of hp,ac,resists by ditching 1her/shield for it(*). anyways just my 2 cents on the issue.
-also side note, what i've noticed at least for iksar is the 1.5 already uses 1her attack animation-
*when compared to knight 1her/shield from seb.
- Sarcon - Evolution