Not Grant, but I'll say it depends on how fast this corner is.  If you are only going 20mph and the uphill is severe, then it can feel a bit sluggish until revs get to 4.5k or above . In those situations, a downshift to 1st is worthwhile.  With rev match, pretty easy to get into 1st, though it's not as easy as 2nd.  

On a leisurely drive on say "The Snake" / Mulholland (you may be familar with this road), I don't really feel the need to use 1st even though the turns are super tight.  But that's also because I don't use much power on such a road.