I've been doing the Guardian cryptic on and off for the last couple of months, but I don't think I've seen one with such odd clues, here are just a few...
4d Men getting brown stopping in sun (7) - HOMBRES
18d Experts, quiet ones, impress department (7) - PUNDITS
19d Shelter to put up poor person (4-3) - HAVE NOT
12a Annoyance at the Royals? That's heartless and unkind (4) - MEAN
I think this is a reference to ME(g)AN, but, if so, why 'Royals' plural?
I manged to get these from the definitions and crossing letters, but, with the exception of the last one, I'd be at a loss to explain them!