SN-10b EW flight recorder/PDA combination

Is anyone driving their SN-10b with an EW flight recorder? I'd like to go
with this combination, and possibly add a PDA as well.

I think I want it because it allows me to not bring a laptop to the
airport, I have a partner and we can each have our own SD card and don't
have to hassle with downloading every flight immediately thereafter, and
it is IGC approved, we want that.

If so, will the EW talk to the SN-10 and how well (load tasks, waypoints,
pilot info, etc.)? Do I need special cables to connect it? And I assume
it will run StrePla (the software it comes with) on a PDA simultaneously
with the SN-10?

I guess the question is... is it worth going with EW instead of
Volkslogger because of the downloading and size convenience it will
provide for a glider with two owners?

Thanks