Ah, you guys
OK, I'll explain the detail.
First, when I say CapsLock, it's "the switch in capslock position", since you know, it's custom keyboard.
You can map any key there, I use CapsLock/Fn Layer Dual Action key.
(You saw my video, I change LED mode with capslock + another key, when hit once, it's caps lock, when typed with another key, it's Fn layer key. simple and useful.)
Somebody uses the position as Ctrl, (like HHKB)
So, it's not about key "function" , it's "position" matter.
When it comes to alps, position -REALLY- matters. Because of slim keycap choice option.
And CapsLock, Row3 1.75u Keycap.
Vintage CherryMX stem position is 1.25u (stepped capslock keycap), OEM MX stem position is 1.75u.
At this point, no problem.
But additional vintage Alps keycaps like AT101, SGI the stem makes it a lot complicated, it's at "1.5u" position.
It's not a problem if Vergo type.T-II PCB is designed only for Alps and another version of MX.
But it is combo-compatible. So yes, really is a problem.
When you place 1.25 MX + 1.25 Alps + 1.5 Alps + 1.75 MX + 1.75 Alps for one switch, the pads stick together in one big chunk of pad. 1.5 Alps pads makes bridge of all pads. So, it cannot be "switch".
Anyway, I just cracked this problem out. not delicate but yeh, it will works.
It looks like this.
This can be a good news for those who planned to use AT101 keycaps for this PCB.