Are you suggesting that is relevant here, or it is just an idle comment?
Look, one example of something that make it impossible to have a superclass in which both sets of standards are embedded is the sequencing of activities in both confined and open water.
I hear what you're saying. AFAIK, the shop does not ever teach a class where some students are getting SDI and others PADI, in the same class at the same time. You have to tell them which one you want before you start, so they can give you either the PADI or SDI student materials. So, they could teach the same class, with all the same material taught (albeit possibly some things in a different order), and still meet the standards of whichever agency's name is on the student handbook. Does that address your concerns? From my POV as (at the time) a consumer and potential new customer, it made no difference. Whichever agency you choose, the material is what is sanctioned by the RSTC, right? So, if you're going to have the same instructor either way, then I don't see how the subtle differences within the OW course really matter. I would think any decent instructor is going to produce an equally competent student, whether the instructor was aiming for a PADI or SDI C card. And if the instructor is not at least decent, then it also would not matter whether they were aiming for PADI or SDI.
IOW, it's the instructor, not the agency (right?). Given that I was going to have the same instructor either way - and I consider the course to be "the same", even if they change the order around - I think my earlier statement, and what it implied, stands.
---------- Post added July 30th, 2015 at 04:16 PM ----------
PADI made significant changes to its OW program last year. I don't know how different it is from SDI now, but I would be very surprised if they are all that siimilar now. Tursiops knows both programs, so he knows the differences better than I.
I heard a rumor (from a PADI instructor, at a PADI shop) that PADI is no longer part of the RSTC. But, I have googled it and cannot find anything to substantiate that rumor. If they are still part of the RSTC, then I wonder how their OW program could be very much different than another agency's OW program that is also part of the RSTC. If they are not part of RSTC any more, then that would certainly help explain it if their program is a lot different now.
Anyone know? Tursiops?
---------- Post added July 30th, 2015 at 04:19 PM ----------
In semi-related news, both the shops local to me have just added SSI training to what they offer. One shop is dropping their PADI membership (correct term?) when it expires at the end of this year. I don't know what the other shop is planning regarding PADI, but they also already offer SDI and TDI.