Not sure if posible directly in xpresso. Maybe creating two separate xpresso tags, one for driving rotation with slider and second one which drive sliders itself with standard rotation of object and adding some switch into the HUD for enable modes (xp1 On/xp2 Off and vice versa)
something like in this short example (values are just 0-100 and 0-90 in degrees) just for imagine what I mean...
(if sliders enabled ON, works sliders, if OFF, you could manipulate with object and sliders will be updated)
slidervsvalues.zip
...maybe some short script in python could solve it...