That looks like it is working pretty well! Do you get access to all 20 saved presets on the One, or just the two in its A/B slots? I am wondering if it can swap the others in out as fast/gapless as it does the A/B with the One's foot switch.
		
		
	 
You can access all 20 slots and switching is just as fast as in A/B mode. Really excellent.
With the web app you can even re-order the captures in their slots, so if you want to exchange an amp on slot #5 (called up via PC #5) for a gig or so without re-programming your MIDI controller, that's kinda easily possible. Which is absolutely up my alley as I usually allow myself to use 1-2 sounds in a "playground" fashion, regardless of the gig - and I'm sure it'll be cool being able to just play another amp here and there, with anything else staying just as it was before.
	
		
	
	
		
		
			I still think IK should add MIDI over USB capability if physically possible (seems like it should just be software) but this is a pretty small and inexpensive work around. I am definitely curious and following your trials with interest!
		
		
	 
	
		
	
	
		
		
			Seems it works via MIDI Sysex or something since there are quite a few third party tools.
		
		
	 
According to 
@IK Multimedia there's no suitable hardware to supply the computing power that is needed for the MIDI translation inside the unit - and I have no reason not to believe that. I mean, it's a very small unit and there's gotta be reasons why it's so affordable, too.
Anyhow, so far I'm absolutely amazed about the way this setup turns out to be. If this is doing well on the next gigs, I may even think about getting rid of most dirt pedals on the live board and tighten up things yet some more.
Also, when you think about just the core stuff, this will make up for an amazingly affordable and incredibly great sounding setup. A used GT-1000 is around €700, a new TXO is around €160, the Pico between €60-100 (depending on where you are), add a suitable PSU for 50 bucks and then perhaps whatever board (could pretty well work with just a bag or light case if you mount TXO, Pico and PSU on a very small board).
That's around €1k and gets you some of the best amp sounds around (if you're fine with captures) and Boss level FX. Sure, some of them are kinda dumbed down, but let's face it, Boss knows FX pretty well - and in case you don't need any nifty stuff, they will suit every situation.
Add to this trail spillover and global blocks.