We too have been experimenting with it since Jeff (AC) announced it.
So far, seems to work fine... but our usage has been as casual back-up to the installed chartplotter/GPS... so we haven't "stress tested" it, so to speak.
I see the bridge clearance next to our marina isn't shown (bridge is on the chart, but clearance is "0.0 feet"), but clearance for the Chesapeake Bay bridge just north of here is listed. When some bridge clearances aren't shown, I'd maybe expect that to be a chart issue (C-Map?) versus P2N (software) issue?
FWIW, I just checked the NOAA raster and vector charts MapMedia creates for use in booth Furuno's NAVnet 3D system and MaxSea's TimeZero. Both show vertical clearance for the little bridge next door. I don't have another way to check C-Map charts to see whether their normal charts have the data or not.
South River, Chesapeake Bay