Yeah, accumulators are meant to prevent liquid to enter the compressor. Never done an SS before but read a lot at XS. A friend of mine built one and tested with R404a and R507c, both refrigerants are almost the same, but R507 could manage better the workloads and was a bit cheaper.
Tests were made with some rotaries designed for R410a (Panasonic 13000/9000 BTU), but as long as the gas is meant to be used with the same oil (POE in this case), there is no problem at all.
Regards