Firstly, the guys at Viaterra are amazing to work with - very helpful, communicative and professional.
I was tossing up between the Viaterra Condor 2Up or the LEH bags and in the end went with the LEH as I preferred the internal profile that better suited by camping gear, and the slightly larger volume. However, I did have to do a small workaround, as shown in the attached photo. That is, the LEH sits closer to the Himalayan exhaust that the 2UP would have. So I simply added an extra strap from the pannier rail, under the RH side bag, up over the top and pulled it up tight from the top mounting point. Along with the Trailpack bags for the front crash bars, I', really well set up.