I have been using the delay on and off for several months now. I like the rechargeable part and the small footprint, but the delay is pretty sterile sounding. I recently swapped it out for an aqua puss, which sounds way better to me.
Yeah I agree its not for everything. While it goes really well with the other RW7S pedals I have - it swaps in and out with a TC Flashback and a Memory Man - the other 7S pedals sound really warm and natural though - like them a lot.