Not that it's a totally portable monitoring setup by any means, but it's possible to monitor P25 Phase II systems using OP25 - just needs a computer (preferably a laptop if you have to have mobility to any degree) and a "cheap USB TV tuner" aka RTL-based USB stick you can find for roughly $10-25 these days on Amazon/eBay/NooElec/etc and many other places. OP25 is a Linux-based solution but can be installed in a virtual machine and still be functional (Linux being the guest OS, Ubuntu 14.04.5 on top of a host OS like Windows 7/8/8.1 or even OSX/macOS as well).
I myself don't own a physical scanner, haven't for a very very long time now and while I'd like to have one I'm sufficiently content to use OP25 since it works so well at what it's designed to do.
It's just something to consider, but yes the LVMPD stream has been very reliable since it was first started, I have no idea who actually provides it but they've done an excellent job of it. One thing I find pretty cool is that it is quite often the second most popular feed on Broadcastify with a high level of regularity, almost always behind the Chicago PD feed. A few months ago when we had that bus shooting here in Las Vegas it jumped to first place for a while, it did that just over year ago (late 2015 iirc) when that driver blasted through LV Blvd in front of the Bellagio injuring a lot of people and killing one person too.
Sometimes we get something interesting here, absolutely.
We also have support with
PulsePoint now too which is an Android app (not sure if there's an iOS version but probably) that works with both the LVFR and Clark County Fire agencies providing info about incidents/map locations/etc. I hope someday they'll add the audio streams but so far it's just the textual based information so, it's something to have around just in case and highly recommended to add it to your "toolkit" for monitoring activity.
Edit:
PulsePoint does have an iOS version as well as expected:
https://itunes.apple.com/us/app/pulsepoint/id500772134?mt=8