Just wanted to update this...
Spoke with Tim at Digico, apparently I was not missing anything. This functionality doesn't seem to exist in the current software architecture. However, in the latest version of the software (which I was not using) you can assign the 2 solo buses to any 2 faders on the surface. Doesn't solve the problem, but could make it easier to cope with?
Samuel - in answer to your "what does it matter"... it's nice to have the ability in a soundcheck to PFL inputs while they are still muted for "safety".
Obviously it's not a show-stopping problem (the show happened and everything was fine). But I think this would be something for them to work on in future updates. I've also since used an SD9 for a monitor gig and same thing, so this is not unique to the SD10, very likely is the same across all models.
Thanks to everyone who suggested the various work-arounds.
