Do you mean that, according to the seller answer, the USB stick the seller sells *would work* as a ledger nano?
OR
The seller sells a live OS with Coinomi installed on a USB device
OR
The seller sells a USB device with a *portable* version of Coinomi on it?
It's probably 2nd or 3rd option.
In that case, for me, it is NOT a hardware wallet, it is a software wallet which, at best, brings the same
security level as TailOS.