It wont break if you don't lube it but the spring noise will get annoying after a while and it ruins the feel of the cube. I would recommend a thick silicone lube like Weight 5, Traxxas 50K or Adheron Heavy. Whatever is available where you're at for the lowest price.
The cube's performance won't be affected by the spring noise, just the feel. It won't be slower as a result of the spring noise but the feel won't be as good. I haven't tried the GAN Standard so I can't say for sure. MoYu did release the RS Skewb in MagLev though and I think that one was better.
RS3M Super Standard corner cuts decent. I have one set up and I have one OOTB and the OOTB version is too tight. Loosen the tensions a bit. Also good luck with the YT channel.
I have the rs maglev skewb, and after weight 5 it feels quite nice. @JDAW6 I do recommend you get lube for your cubes at some point as it is quite useful in making the cubes feel better for longer.
Would definitely need lube.