I get the gut feeling that Uniden is playing things smart here, with a "under-promise and over-deliver" mentality...purposely not bragging about LSM too much. I personally don't understand all the doubt. LSM isn't magical, it just requires equipment designed to properly demodulate LSM. Commercial radios do it, Unication does it, and Uniden simply created a scanner than can demodulate LSM. The only running question has been, "how much will it cost to build an LSM capable scanner?". I would have guessed more than this, so if all is what it seems, Uniden has done a great thing here.
As far as Unication being the "gold standard" of LSM reception, after spending time with the G4 I would strongly disagree that the G4 / G5 pagers work as well as a new public safety radio. The Unication units make annoying / odd noises at times on local systems, and go completely deaf near Verizon cell sites around here. Sometimes they just drop their link, and have to re-establish it, taking 15-30 seconds. I have spent considerable time around in-service police radios on the local LSM system and they do a much better job with LSM / digital decoding than Unications, which as I have long said have performance somewhere between a scanner an a public safety radio. So, sorry to stray a bit, but the SDS100 does NOT have to match a public safety radio to match the LSM performance of Unication. If it does match Unication as expected, it will make the G4 and G5 utterly irrelevant for scanner users.
If I had to bet money right now, I would bet that a lot of skeptics are going to be surprised. LSM has been around for a while and demodulating it isn't magic, we are just used to scanners that didn't do it.