Well, it looks like it's my turn.
I finished building my SEQ 4v+ about a week ago. Such a great design and the Midiphy kit is really top notch.
I went with Antichambre's MEC switches and key caps 5GTH920Q + ILSQ96-15.0 from earlier in this thread. I was a little late to the party, so I missed out on his custom Matias key cap bulk order!
Inside the MEC switches, I used the square Midiphy supplied LEDs instead of the suggested 3mm round LEDs, substituting the green Play LED for blue.
For the knobs, I used some Eagle 450-BA600 knobs from Mouser. They have a soft touch similar to the Thonk knobs, but they're a little shorter and wider and sit a little lower, with a skirt that barely covers the case's encoder holes. A nice tight fit. I've added a picture with the Thonk slim small knob sitting between the Eagle knobs for comparison.
I'm looking forward to the LoopA v2 metal case release this coming year. I plan on picking up one of those complete kits, as well.
Anyway, here are some pics,
Thanks!