GREAT read on bike fitting Jur! - Thanks for sharing.
And for the record, I'd fall into category "Intermediate".
I spent just over a year on a more upright Dahon Mu, and in retrospect, that was probably a good thing. It kept me comfy & hooked on cycling, and lead me to my Swift!
Since switching to my Swift about 2months ago, I went through the 'stiff neck' & tingly wrists phase w/the longer reach & lower bars.(Bullhorns) But I did get what I was after - I was able to exert MUCH more power onto the pedals than w/my Mu, plus not have to struggle as much in headwinds. However, I wasn't gonna hurt myself for it though, so I bumped my bars up a few cm's, and made sure I altered my hand positions every so often..After two weeks, I lowered the bar back down again, and feel I've been conditioned plenty. No issues at all and I'm still able to enjoy the benefits of the 'swifter' ride.
So from experience w/the Swift, I'd definitely say work on the fitting too.
Oh, for what its worth, I've got a single wrap on my bar, and use gel-inserted gloves every time I ride.
Hope you work out your ride okay.
Rgds,
K.