The pen works fine.
For right click you click the pen button while hovering over the item you want. A little circle comes up and then you swipe over the circle.
Agreed manual scaling stretching of items on the high dpi screen is finicky due to the need to grab the little anchors but its not impossible and how often would you be needing to transform sprites in this way?
Touch Long touch right click though doesn't work
, but I've noticed it doesn't work for a lot of programs. So perhaps it is something that needs to be deliberately implemented.
So I think devving with the surface pro on the go with just stylus in tablet mode should be a goer. Though haven't tried in anger yet.