Mr H
Banana'd
Judge Sculins order used the words loaded IIRC I don't see how if the handgun ban isn't enforceable then the mag limit would not be either.
IANAL
"Ready to use" was the wording, so yes... I would infer loaded from that.
At this point (and again, I won't be one to advocate traipsing into DC until we know more--but that's just me), I would say that prudence would dictate keeping with the 10-round limit and no extra mags.
Until someone can dissect the order (and all the related statutes), I don't think we really know. Plus, there may well be a stay coming, and I'd hate to see someone caught in-between.