This is basically created for lazy people, or when you are in hurry to exchange coins, and you accept higher fees and the risk of being asked for kyc.
I heard Trezor creators are open for improving it and enabling non-kyc exchange but that is easier said than done.
To be fair, I just made test to see how +Invity could handle a simple swap of 20$ worth of BTC to USDC (ERC-20)
They seem to be as transparent as possible when comes whether the client could encounter a KYC wall along the way, or at least that is what they try to go for.
For this specific swap I got only two offers as seen in the picture, letting to one side the lacklustre fact they keep about 2-3$, Satoshilabs try the total quantity to be received to be as explicit as possible.
Taking those providers and searching for them on internet, we can get this:
https://es.trustpilot.com/review/changenow.io
https://www.trustpilot.com/review/sideshift.ai
So the quality of the service in this case could go from a seemly excellent service to a regular one, I'd say that is not ideal.
Also:
ChangeNOW has Bitcointalk account (with red trust) and dedicated thread:
Thread: https://bitcointalksearch.org/topic/exchangechangenow-anonymous-limitless-05-fee-2811013
User: https://bitcointalksearch.org/user/changenow-1307188
According to trusted members of our community this service may be selectively scamming their clients ,probably those who swap large quantities of crypto, allegedly they have stolen over 100 BCH from a victim and allegedly they are being several services.
If true, this does not put Satoshilabs in a good position...
I found this thread on Reddit: https://www.reddit.com/r/CryptoCurrency/comments/8wsgir/changenowio_scam_fraudsters_have_stolen_100_bch/
I believe it is worth taking a look at it, it seems that after doxing and tracking down the people behind the exchange, the guy finally got his money back after months.