So, I accepted Gladwell's geas and slayed the dragon under Harkin's Landing.
I did this before killing Lysstak.
I killed everyone in Harkin's Landing, and after not being able to please the Slith incantrix in Exodus, I slayed him half the town there hoping to get a bracelet. No such luck.
I briefly ran around Tranquility, and I assume the tunnels will eventually lead me to Solberg, but am I going to be forced to continue to kill like this?
So far the geas has been more a curse than a gift.