I actually got a few(3) str8, but to have a point of reference I had one honed by Lynn and use it as my first str8 razor shave - it was awful!!! I stropped it after a day and use to shave just my cheeks only for my second shave, it was a bit better. Stropped it again after 48 hours and my third shave was ok. I also got a Boker off e-bay, that my wife restored for me, and it shaves ok too, but after lots of stropping, I managed to hone it myself :-)
So far all of my str8 shaves are not close or anything to brag about. I still get a better shave with shavette or DE, and I understood honed by professional will not really shorten the learning curve. When I do not have time I just do first 1-2 passes with str8 and one with DE and set full str8 shave for one of the weekend nights when I can really concentrate. I still happy to take a blade out of shavette and practice just how to move it around my face, that was a great help to stop getting nicks, of course that will not teach you angle of a real str8
Also after shaving with a real str8 it became much easier to shave with a DE somehow, I use to give myself a razor burn once in while with it, now it just does not happen anymore, like it moved to str8 razor territory. My shavette shaves are easier too, go figure.