Does anyone do one-on-one kid dates?

Telyco

We're starting this up and I'm just wondering if anyone does this. Evan has a speech-based playgroup on Saturday mornings for an hour...so that means that Leah gets one on one time with one of us. But then I think we'll add another "date" night/morning in there so we can "switch kids" and do something alone with the other. (we do lots as a family so it's not like we are sacrificing family time or anything).