These two classes are fundamentally different, so it does not matter much in which order you take them. However in my personal experience I would suggest taking the S&R class first. In that way you will complete your SSI training before heading towards a different kind of doing things.
For instance, with SSI air sharing is what I call a form of 'underwater wrestling'. You're tought to hold each other close, grabbing each others BCD and perform some ritual hand movement to exchange the reg. Then you are able to find your octopus and get a breath yourself. After things calmed down you have to get out of the situation vertically because horizontally (swimming) won't work. Complicated and stressfull to say the least.
After I did Fundies, it got to me how complicated the SSI method is. The GUE method holds nothing more than offering the long hose with your right hand to your buddy (taking primary reg out of your mouth, pulling hose over your head and offer to your buddy) and use your left hand to put the secondary reg in your mouth. You both will have air in seconds. No clasping on to each other. The long hose provides enough room for both to swim towards safety, even with ceiling above.
It felt really easy and logical to me. Did not even have to think about it. For me now GUE is the way to go, I have abandoned the SSI method. Therefore I would advise to complete SSI training first. It think it will be confusing when you do GUE training first.
For instance, with SSI air sharing is what I call a form of 'underwater wrestling'. You're tought to hold each other close, grabbing each others BCD and perform some ritual hand movement to exchange the reg. Then you are able to find your octopus and get a breath yourself. After things calmed down you have to get out of the situation vertically because horizontally (swimming) won't work. Complicated and stressfull to say the least.
After I did Fundies, it got to me how complicated the SSI method is. The GUE method holds nothing more than offering the long hose with your right hand to your buddy (taking primary reg out of your mouth, pulling hose over your head and offer to your buddy) and use your left hand to put the secondary reg in your mouth. You both will have air in seconds. No clasping on to each other. The long hose provides enough room for both to swim towards safety, even with ceiling above.
It felt really easy and logical to me. Did not even have to think about it. For me now GUE is the way to go, I have abandoned the SSI method. Therefore I would advise to complete SSI training first. It think it will be confusing when you do GUE training first.