Hi Luca,
I have a pair of draggin jeans (denim blue) with CE protectors & hip pads.
1) They look good (for riding gear) - especially with a black leather jacket
2) They are comfortable (buy 1 size up in order top make room for the hip pads)
3) I agree with bduke - there is probably a trade off between safety and comfort
4) I wear my BMW City trousers and BMW Summer 2 trousers MORE OFTEN as i feel more protected in them
IMHO, draggin jeans feel like a halfway point between street clothes and riding gear.
So i guess it comes down to beauty over function.
If you have the $$$, then they are nice to have in the closet.
For short, slow rides where you know your speed will be limited, i give them a thumbs up.
If not, i'd probably go with a pair of proper riding trousers that are purpose built for specific needs.
Personally, as an ATGATT person - i feel more protected in my BMW or Spidi gear.
So with that in mind, my jeans only get used on rare occasions - but its still nice to know they are there for those calmer, slower rides.
All the best,
E