It's better than nothing, but one of the values of UUIDs for identifiers is that you can create new ones client-side while offline. These "sequential" UUIDs will fail standard UUID validation because of the byte swapping and, in my experience, when used offline-capable apps, will result in sparse clusters of sequential UUIDs that yield an unpredictable improvement over truly random UUIDs.
It's better than nothing, but one of the values of UUIDs for identifiers is that you can create new ones client-side while offline. These "sequential" UUIDs will fail standard UUID validation because of the byte swapping and, in my experience, when used offline-capable apps, will result in sparse clusters of sequential UUIDs that yield an unpredictable improvement over truly random UUIDs.