Are they sortable as a string or as binary? Once you deploy something like this, that becomes important because you'll end up storing binary and string representations in different spots, unless you're _really_ careful (and DBs can insert way faster if you're always doing so near the end of the primary key sorting). And unless you use a totally custom string function, you can't have both, since base64 has letters bef…
The examples use both letters and numbers in the ID composition so I would guess not - in all honesty though your question needs some clarification because the string representation of UUIDs is pretty fluid - there's the generally expressed version like `01324332-f66a-054a-76e4-fbdc7f772cd1` which appears to be what this generator favors - but for indexing UUIDs are usually considered to be their binary values so it's highly unlikely that a DB would see anything beyond a coincidental marginal benefit from using this package.
It's hard to tell since the package says "sortable using UNIX sort" so it's not a format agnostic sorter - but it's also not conclusive whether the author meant the common human-readable strings can be sorted using UNIX sort or the binary strings can be sorted using UNIX sort.