Zoom Eyepiece's - Yay or Nay?

Update May 21!
I am slowly in the process of demonetizing all my videos, I was never in it for the money or the glory. I just like to help people. This way you can rest assured i'm not making a video only to trigger an algorithm or as click bait. I have been a bit disillusioned with it all lately, and hopefully this will help.
Instead if you wish to support me you can buy me a coffee or beer instead :) entirely your choice though!
www.buymeacoff...
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Svbony sent me their SV171 eyepiece to take a look at. I haven't had chance to use it yet, but it seems well made :)
The UK (specifically Birmingham) weather is ruining me...but i shall keep the faith and look forward to the next clear night. Hopefully the cloud gods can be nice to me for a change!
Svbony 171 8-24mm zoom eyepiece weighs 310g.
If you really like the look of it and want more details, you can find it here:
U.K.:
www.ebay.co.uk...
USA:
www.ebay.com/i...
Germany:
www.ebay.de/it...