Exactly, just tape from the hoods down to the drops. The tops are left bare. That's how I taped my K-Wing anyway. No worries about slippage, the shape of the tops fit the palm nicely.
I've taped mine how you would any normal bar, up and over the drops and hoods, all the way to where the brake cables poke out.
Probably not the 'correct' thing to do as per instructions, but it makes the tops just that little bit (even) more comfortable. At the least, all that leftover bar tape isn't going to be any more useful than that, if it had been tossed in the bin
Actually, you don't even need tape to tape your handlebar. Start from the top of the handlebar where you want to apply the tape and work your way around the handlebar until you reach end. Leave some handlebar tape by flushing the excessive into the hole and plug it.