My own training was a mixture of PADI and SSI. Under SSI, one does not receive the AOW card until completion of four specialty programs (which may include Stress & Rescue) and at least 24 dives. I actually switched to SSI mid-stream because I preferred their approach.
That's because the SSI AOW isn't the direct equivalent of the PADI AOW. Don't compare apples with oranges... just because SSI copied the name AOW...
SSI AOW is equivalent to PADI Master Scuba Diver.
The SSI equivalent of PADI AOW is the 'Advanced Adventurer' course.
---------- Post added November 6th, 2015 at 03:02 AM ----------
I've taught students in sidemount... ît's just no big deal. As for getting "qualified" in sidemount, that's entirely up to you. It makes about as much sense as getting qualified for doubles or even single backmount. Go play in a pool. You'll figure it out. That's what I did.
There might be issues with course standards, if a student turned up to dive with sidemount, but didn't hold a qualification in it.
As for 'teaching yourself', I've yet to see any diver set-set-up, configure, tweak a rig properly... or achieve an excellent skill-set.. in any reasonable timescale, when making it up as they went along.
It's an area of diving where the are real, tangible, benefits from getting expert guidance. There's an art to getting it optimized... and that's not something you can do by reading a few Web articles...
Note: I said expert guidance.... not some drone instructor who was gifted a sidemount instructor rating after only a half-dozen sidemount dives...
Sidemount, backmount... Singles.. Doubles... SCR, CCR.... if qualified, then you can take training in it. But,... a prudent, ethical instructor will want to assess your competency in that configuration as a requirement for the training. That ensures both safety, and that your training experience is not degraded by equipment unfamiliarity or weak skill-set