I have not tried Hontoo yet. However, they were on my radar when I was in the market for a reliable follow focus unit. At that time I was looking to buy either a Movcam MCF-1 or a Tilta FF-T04 (Dual sided cinema follow focus). When searching eBay for the best price, I can across Hontoo (ebay seller: moviejoyfull). I ended up buying a Movcam MF-2.
Among Chinese manufacturers they are one of the most low profile manufacturers (even SmallRig is popular) that aim to offer features that cost way more among the established ones (namely: Movcam, Tilta)
From the pictures their engineering design looks very good. Cannot yet attest how reliable they are on the field. They also manufacture cages.
They have a presence on facebook too:
https://www.facebook.com/Hontoo-359156967584835/Keep us posted on your choice. I am surprised Movcam & Tilta have not yet released their versions of a support cage for the URSA Mini.
Movcam in specific makes really well designed and reliable products, though they do tend to be the priciest among Asian manufacturers.