A couple of points - and this may be redundant, but . . .
RE: CalFIRE and the TK-5710. These are just new, upgraded, versions of the venerable TK-790 that are P25 capable. The "Command" group, which is in essence a virtual group, already existed in the CDF version of the TK-790 as provided by Silverado Communications. They re-designed/programmed/fixed the firmware to allow 254 channels (instead of the standard 160), the capability to change CTCSS tones "on-the-fly", and a virtual command group that can be created from any channel, in any group, in the -790 program. I have one installed in my truck, and love it. Not quite as easy to program as the BK EMH or GMH mobiles (must have an OLD PC/Notebook to do it), but the feature set is right on.
RE: BK portables. I am a carded INCM, and often times when deployed, will assist the COMT's with cloning and/or programming the EPH/GPH/GPH-CMD HT's. I have also gone out to spike camps when no COMT is available to do some field cloning. My personal record is approx 200 radios cloned by just me, in about 20-25 minutes. It helped that I had the Master Clone Plug made by Silverado (see a theme here?), that allows programming any of these radios without needing to use master radio, it is just a plug. Really makes it easy and fast. I have also seen a large camp, 1000+ on the line, get a new 205 issued, and therefor a whole scale re-cloning of ALL radios. We had 3 or 4 persons doing the cloning, and as long as they showed up with BK's (NB capable EPH's and up) there were NO problems. The only thing that slowed us down were the crews that showed up with Racal or Ericsson radios, which were not clonable (at least by us) and somebody had to get them programmed separately.
And, on a personal note, I have had a personal Bendix-King, then BK Radio, since my first LPH that I bought in 1985. I have only replaced the radios, progressing from LPH, to EPH, to GMH, to GPH-CMD, when the technology got outdated and I needed something more for my career. From being dropped on pavement, cooked in Structure and Wildland fires, rain, snow, Santa Ana winds, etc., a BK radio has never failed me. It is the Timex watch of radios - they just keep on ticking.