If you're in the market the keychron brand has similar builds with hot swappable switches. I'm rocking a K6 with holy panda switches and absolutely love the buttery feel.
We have a K2 and Q1 (more than 1.5kg!), both will yellow Gaterons, and they are just so great to work with. I don't know what Logitech's marketing was thinking, they seem to have stripped all that is fun about mechnical keyboards from the product and created something exceptionally lame.
I also went with keychron a year ago and Iām very pleased. My only complaint is that battery is shitty if you use the wireless mode with the led backlight on all the time (it will last about 4-5 days max).