Ha ha ha, I've got one just like that for cycling too. There's absolutely no reason for a SMIDSY when you're wearing one of them.
If you rode out on the lanes around where I live, it would be true.
*adds another item to the list of "reasons why working from home is so much better"
Like you needed any other reason besides, "can wear pajamas while working"?
I don't tend to do that, as I usually walk my son to school and I feel I may get one or two strange looks, but I'd be lying if I said that I'd never worn jim-jams for work :)
I started out just having 1 day a month working from home. Once I'd proved how productive it was possible to be I got that increased to 1 day a week and finally I convinced my boss to let me work full time from home and move out of the SE of England.
Now I only spend 1 day a month *in* the office (if that).