Can you supply the research upon which the 10 FPM ascent rate is based? In the only research I know on the subject of ascent rates found for recreational diving found that 30 FPM was superior to 10 FPM.
Please let's not turn this into another deep vs. shallow stop debate.
The challenge for open water divers is the lack of skills to control their ascent rate if panic sets in. The "Controlled" in the ControlledEmergencySwimmingAscent that is one pillar of open water safety is IMO wishful thinking for most novice divers.
The typical "death by drowning" is not drowning from ascending too slowly, it is death by OOG, then shooting to the surface like a Poseidon missile, then embolizing, and then drowning.
After peripherally witnessing an Out-Of-Gas emergency that ended in the death of the open water diver due to
PBt/
AGE as a result of an out-of-control panic ascent, I demonstrated several times that even an "empty" AL80 has enough gas left in it to make a GUE type ascent from 80' (i.e. 1 min@ 40', then 30 second slide, 30 second stop every 10' to surface. This ascent pattern is IMO largely a training step for future Tec diving, not necessarily the most efficient NDL ascent strategy.)
Let's not forget that every(!) dive is a decompression dive. Recreational open water divers decompress during a controlled(!) ascent and possibly/preferably a safety stop. There is no point in becoming another casualty by exceeding the physiological limits as a result of unnecessary panic.
If you run out of gas -which should never, ever happen- and you cannot get gas from your buddy -which should also never happen-, I would suggest to ascend expediently but to keep breathing the gas that the diminishing external pressure will allow to flow from the tank. Slow the ascend down to a sane rate and do a safety stop. Be prepared to orally inflate the BC on the surface.
Disclaimer: Do not try this at home without understanding of what you are doing and without a solid "plan B". I demonstrated this in a team, with double tanks that I isolated, which means I had plenty of reserve gas around me. After turning my doubles into two separate tanks by closing the valve connecting both tanks, we continued the dive until my right tank was "empty" and breathing from my primary regulator became very hard. I then thumbed the dive and ascended continuing to breathe from my right ,"empty" tank, did the GUE stops, and even inflated the wing enough to (barely) float at the surface. During all that I had a backup second stage hanging under my chin, connected to about 70 cuft of gas in my left tank. Plus two well trained team mates with tons of gas at arm's length. So, there was no need to panic. But in the extremely unlikely case that the same thing ever happens to me while diving a single AL80, I will respond exactly the same way. Start an immediate ascent, keep breathing, and use all the time left in the tank for "deco".