model.all throws an exception for non-numeric id

[pistole]

'(error) ERR One or more scores can't be converted into double' is the error redis throws.

It looks like the sort command isn't being issued with 'by alpha' like it should for a non-numeric column index.

It looks like this is the offending line: redis.js:506, which disables the non-numeric check for the id column.

Is there an underlying reason for the assumption that ids are numeric? Everything else seems to work fine without it and removing the check causes the model.all call to work normally. Nothing in the documentation calls it out as an unsupported case (at least as far as I can see).