I too have tried the new Free Edge gel....but I tried it on myself to test it. I am loving the way its wearing. It was very quick and easy to sculpt with....thought it would be more difficult when i saw the consistency as its quite thin and runny, but no, it self-levels beautifully, but stays where you put it on the form. Its strong and very fresh looking, providing a gorgeous natural yet tough enhancement.
I have also left it natural (as opposed to POW french) and out of interest asked a couple of people to pick out which nails are natural and which are sculpted...a trained tech would be able to tell, but Jo Public has had a tough time by just looking down at it!
Clients love the colours...they are rich and beautiful, and once a client has tried a colour they never want to go back to enamel. It is also awesome for coloured toes - lasting 6-8 weeks. I offer a mini-pedi, plus Bio toes and it takes me less than an hour....and for that I charge the same as my infill/nno price.
I find Bio a great complement in my portfolio alongside a my buff off gel. IMO one would never replace the other.