With the watch upside down and using my left thumb and forefinger I can wind the watch fairly easily. I too would be afraid of scratching the lugs...
As to newer Resonances being easier to wind, experientially, my Resonance is only a few months old and it's not difficult to wind, although the last 10% is somewhat more resistant.
I wear my resonance while traveling in separate time zones so I end up winding it for several days at a time. It's simply a pleasure 
BB
The Goal is Soul
I used to think winding the Resonance was incredibly awkward but since that time I've gotten used to it and alternate techniques.
The first way is I point the crown to the left. Using my forefinger and thumb in downward position (forefinger behind the crown and thumb in front) I wind by lifting the forefinger up and pushing the thumb down in long strokes.
If I want to be quicker, I use the table to support the bottom lugs (strap tucked under) and crown in the up positon. Using my left thumb in front and my right forefinger I'm able to create a long winding motion along my entire finger. When I reach the end of my thumb I keep the resistance and reset my forefinger and then reset the thumb and do again. Takes seconds to wind up.
I've never thought of taking the strap off. I'm always to afraid to scratch the lug.
Interesting is I find newer versions of the Resonance easier to wind then the older models.