To answer what I remember of the Q directed at me:
Yes it has a 90 degree mirror and the model I bought at toolscource came with the mirror and --- a magnet--it was not marketed as a gunsmithing tool.
Which would I buy? Well I bought the VO scope flex model. I had looked through a Hawkeye and did not see any real difference. If I win the Lottery, maybe I will buy a Hawkeye, but I only have a disability check each month and for now the VO is what I can afford. But---thinking about it further, I think I prefer the flexible probe-- I have lever guns and such and I can insert the probe (18") from both ends which I could not do with a 17" Hawkeye rigid probe. Besides, if I go around spending 800.00 for something like a borescope that I can get for under 300.00, how will I ever save up my pennies for a March rifle scope?
I think the lady at VO must have misunderstood the rotation Q. I can see 360degrees of my barrel. All I have to do is rotate the scope when using the mirror and I get maybe a little bit better 360 degree view of the bore with the VO in straight ahead mode than I remember getting with the Hawkeye....
Anyway-- the VO works quite well for what I wanted to do with it, which was mainly to see how clean my match barrels were- and to look at some "match" barrels to get an idea why they shot so lousy. I can't say that it's really saved me any money; in fact, maybe the opposite. I gave up on an existing Oly Arms "match" barrel in favor of buying a Shilen select match for a prospective OA AR BR rifle I presently own.