https://www.amazon.com/AMVR-Controller-Anti-Throw-Accessories-Adjustable/dp/B09JJLRCVS this might work for you
Any of these grip anti throw things will work if it's g2 on amazon find one you like.
I tried the Oculus grips and didn't like them.
Kept looking around and settles on these: https://www.amazon.com/dp/B09JJLRCVS/?coliid=I3K3U40Y1RQNCH&colid=15E78SZG48ZXR&psc=1&ref_=lv_ov_lig_dp_it
Both my wife and i prefer them for our G2s over the VR Cover Oculus or the AMVR Oculus ones. If you look around AliExpress you can get them for about half the price compared to Amazon.
The KIWI pully system is fantastic, use it daily. It is a bit of a pain to have to remove the cable from the pully system to put away the headset. It only takes a few minutes tho, still well worth it.
Because they suck and dont take away from the cheap plastic feeling if you are referring to the AMVR G2 grip with the special cover.
Also a design flaw with the pleather strap on these that are well documented in the Amazon reviews, Reddit and VR sites. The angle is awkward when holding these grips like a gun or even in Beat Saber you can feel the angle is off.
Dont buy these grips:
https://www.amazon.com/AMVR-Controller-Anti-Throw-Accessories-Adjustable/dp/B09JJLRCVS/
If you know other grips that fit please share with me. I posted this because most Reverb G2 owners complain about the cheap controllers and non Reverb G2 owners say its why they passed on buying it and sick of hearing it when my posted solution will make the controller feel like a Touch Controller in VR.
I just got the AMVR anti-throw grips for the Reverb G2. They're great.
Looks like the HP VR1000 doesn't come with controllers, though? Did you acquire some controllers with it? Perhaps the same ones that come with the Reverb G2?