the sturmey mounts have 3 (IRC) positions that they can be adjusted to so you can set them up at different angles to the bars,
that said i'm using them on an old Marin with Nitto Albatross bars (for when my back is bad), also using an m760 rapid rise mech so the gears are more convienient to get too
swapped the bars and lent the marin to my son in law for the Devon coast to coast, he loved them and now wants thumbies himself.
I tried them with a normal rise mech and didn't like it the gears were all arse about face
the paul thumbies are OK but i have broken two of the fitted cable adjusters, the adjusters are ok for a rear mech or for down tube stops but aren't very strong for bar mounting imo
i like/prefer the Sturmey/sunrace as they have no adjusters i just use the one on the rear mech
the Pauls are sat in a box at the moment awaiting a new life on a frameset i bought NOS bare metal so won't be used again for awhile
btw crc are offering £15 off £99 spend so i just ordered 2 sets of dura ace 9 shifters before they become obsolete (want the option of friction mode)