I just signed up for evolvr and got my first evaluation last week from James H. I felt that James did identify the biggest issue with my swing and showed me what to do to correct it. Additionally James also explained the cause and effect. Even though I've only received one lesson feedback, I can tell that I did the right thing by signing up and that my game will improve dramatically over the next few months.
I've been a long time lurker of this forum and try to read up on what I can and THINK that I have a somewhat decent understanding of the golf swing. The thing is, there is a difference between knowing the technical aspect of the swing and being able to properly diagnose / assess your own swing. This is where quality instructions come in.
The main point of my post though is to share my main concern with on-line lessons to those who are considering evolvr or another on-line lesson source. Being about a 20 handicap, I FEEL that my swing varies greatly from good shots to bad shots. I was concerned that sending in a video of just a swing from down the line and one from face on would not be a representative sample of my swings. I ended up emailing Eric about it to which his response was "the swings those folks make are 99.4% the same. The only thing that changes is a teeny bit of timing stuff that has them hitting the ball fat or thin, or pulling AND slicing it, etc.". Eric response made sense and alleviated my concern. I then signed up for evolvr.
The last point I want to make for potential on-line students is that there are lots of free software that you can use to easily trim out your swing video to select the one you want to upload – assuming you did a long recording of several swings. Most of those same free software will also allow you to easily combine two videos (one from face on and one from down the line) as one video to potentially make it easier for you to upload / archive.
Even though I just started with evolvr and knowing what I know now along with my first lesson feedback, I really wished I had signed up much sooner. I would have enjoyed the game even more. Now I just need to go out there and practice. J
Good luck to all.