Katy did what?

I'm not sure which species (or even genus) of katydid this is, but I'm 99% sure that it is a katydid, despite the relatively huge legs for them. It could be a late immature grasshopper but those antennae point away from that.

This is from a 'I need to get out of the house' shoot last week - it only lasted about 20 minutes and there wasn't a whole lot to really see.