I'm not trying to offend you here, just want to make sure you've thought this all the way through.
As someone who carries concealed nearly 100% of the time, I practice drawing each of the pistols I carry at least 100 times a week. I've taken a few courses and read a couple books... I forget the number, but I think it's around 3000. After 3000 repetitions an action nearly grows into a reflex. Until you've repeated the same drawing motion (or draw & c0ck or draw & safe>off) 3000 times, you're subject to a fairly high level of emotion, and consequently a high level of adrenaline.
After looking at the mounting system on the website you linked to, it looks like it's a plastic mount and you have it screwed into a plastic trim piece. I'd be willing to be the mount itself is fairly stout, but it looks like where you have it mounted to isn't all that stout.
My concern is that, in a moment of need, you'll become excited (which is understandable) and draw either with too much force, or at an angle other than rearward in relation to the holster - and that could easily rip the mount out. That would leave you holding a holstered gun with a cover over the trigger.
Obviously you would rather not get into a situation where you have to draw your gun this very instant, but if that becomes your only option it's preferable to draw from a known & slightly slower location rather than a faster location that could leave you surprised.
Again, not trying to offend you - just something to think about. For storage while driving, that location looks very comfortable compared to keeping your gun on your hip.