For me it's quite simple. I have the JF Real Scenery package complete (about £100 at the time of purchase) and I usually have it installed.
I also have the aforementioned UTX + GEX + UK2K VFR Airfields 1,2 & 3 also installed.
When I am flying purely VFR and forbid myself GPS and any destination airfield beacon (currently typing up such a tour HERE with loads yet to come) I activate the photo scenery with the VFR Airfields, Farmstrips and remainder using Alf's Airfields.
For everything else I deactivate the photo scenery and switch on UTX et al.
Best of both worlds

I will buy this if it looks good. Have to wait for some HD videos or a demo to decide, I guess. It'll simply be another option. It may replace UTX in the UK (but UTX is used for much more than that).