Probably both since there are parts of Bluffdale like east towards the mountains where UC Simo doesn't come in clear. I'm sure their radios will affilite with both sites and Nelson. I used to hear County traffic on Nelson before all this change occured.
The breakdown is this. They hired five officers: A 12 year veteran out of Utah County SO, a 20 year veteran from Unified PD, a nine year veteran from Farmington PD, a 2.5 year veteran from the SL Airport PD and a 2.3 year veteran from Logan PD. Plus two records clerks.
This info comes from the police blotter and SS city council minutes published in the Crossroads Journal which is the hometown newspaper for SS and EM.