I am pretty sure the side plates and pin diameter are the same so as far as I can tell the only disadvantage 10-spds have is narrower bearing surfaces. So yeah they probably wear a little faster, but are just as strong. That said I think they are fine.
BTW, I suspect that most chains could do better with more neglect, at least when it comes to cleaning. I think folks kill their chains with kindness about as often as they do with neglect. Aggressive cleaning with solvents or detergents helps abrasive grit get deeper into the chain and kills the lube there. Frequent lubing and wiping down is good, frequent more aggressive cleaning is not good IMO. I clean as infrequently as I can and use the least aggressive method that I can get by with. That means only applying and wiping off lube the large majority of the time. If the chain is muddy a rinse with plain water and as little pressure as possible is the way I go. Once in a while when the chain gets very sandy I resort to a good spraying down with WD40 before relubing. That has given me over 10K miles on most chains before 12 links measure 12-1/16 inches and I replace them.