A MS surface minimises that problem, also the possible display angels minimisez the pain in neck sholder arms plroblems (my opinion). I use it Just behind my keyboard in front of me angled as the OP (Dave) is thinking o doing. in a dual monitor setup in front of the 2nd larger screen (in my case a 21,5" Full HD monitor, space is a issue for me). When creating music I replace my keyboard with a Arturia minilab. This works best for me. I usualy have the console showing on the touch screen en the track vieuw on the monitor (as it is not realy workable in touch i think) Haven't used the matrix al lot (yet) but also great for touch Triggetering ideas straight from the matrix!!!! (Very valuable to me). It would make sense (also for portable music making) to have the track vieuw workable with touch... Not for now though...
For now Touch is not there yet (dissapointed) though its capabilities are not fully harnesed in Sonar. The advatages for haviong the abillity outweighs the disadvantages for me.
As a former user of a Yamaha 01x I have to agree that knobs and faders in my opinion are more musical as it gives you more feeling on whats beeing changed / alterd musically instead of reading that graphically. I know it is a mindset but for me thats how it works.
I wouldn't part with them just yet. Maybe when the functionality in Sonar enhaces regarding to touch capability/posbility's I would reccomend.