I was on a tourist flight a few days before, which is probably where I picked up the virus. Felt very rough for a few days but am slowly improving now.
I couldn’t say for sure of course as all desks / chairs / people are different, but with my VKB mounts attached to the desk I have always been able to mount either the Gladiator or Gunfighter sticks in a way that felt natural, and was not an uncomfortable stretch up or down. The mounts themselves do have some adjustability at the top and bottom, but I have never had an issue with either joystick or when using the extensions on the Gunfighter.
If the Gladiator feels natural and comfortable in standard setup on the mount then I think it should be fine with the OTA adapter, as your hand will be at about the same height still, just a different angle. VKB have a YT video on their site which details setting it up, and it shows Gladiators with and without the OTA alongside one another, for comparison.