So I was able to drive up to Hockessin and spend about 30-45 minutes monitoring the 01-17 (P25) / Site 7 (Mot SZ2) antenna site.
Absolutely no traffic populating on the Site 7 system. It's broadcasting, but there's nothing using it.
The P25 site (01-17) has a little bit of traffic coming across it. However, as I was leaving I noted that I lost the P25 site when I was about 1.5 miles away. I suspect that for testing or configuration they might be running it in a low power mode? Either way, here is data from UniTrunker and SDR Trunk on the 01-17 site. I noticed it also shows duplicated frequencies from Site 7, so I suspect that all of the Site 7 frequencies will be moved onto 01-17 after the cutover.
I've made a submission on this info.
