I am absolutely loving my mobile set up for my VCs. I have a Chord Hugo 2 and the R6 2020. The R6 2020 will drive the VC at moderate to low volume and it sounds great. When I need more power, transparency and detail, I connect the R6 2020 to my Hugo 2 via a Hiby coax cable and it delivers. I still prefer my Bottlehead crack and Bifrost 2 for tethered listening, but this transportable/portable solution is fantastic and works for all use cases I have for travel. Before I got the Hiby, I used a BTR5 for walking around. I used my Mojo/Poly for around the house and I used my Hugo 2/2go as one of my desktops. Now, I don't need the BTR5, the Mojo/Poly or the 2go. I may sell them off.
Edited to note that the biggest problem I have now is figuring out a carrying case for my VCs. Everyone mentions a seahorse case. I see them on Amazon, but I don't know what size would work.