You can convert skill points to attributes (2 skill for 1 att) Since depending on your build you may not be using all of the skill points. As a 1H/2H infantry build I don't need points in PT, PD, Horse riding etc. and there's only so much I can pump into Ath/PS/IF/WPM.
Flamberge is not sheathable (iirc) so you cannot put it away for another weapon. It should be the only weapon you have on you.
And PS has no bearing on weapon speed, only wpf.