Kestersonian
TreeHouser
It looks like the Rope Wrench is getting a little more acceptance out in the world. 
http://www.itcc-isa.com/resources/rules_Advisories_Update_ISCRopeWrenchApproval_Final.pdf

http://www.itcc-isa.com/resources/rules_Advisories_Update_ISCRopeWrenchApproval_Final.pdf
! i would think that the Hitch Hiker cant be far behind. does the work climb require double rope? i would love to see srt allowed for the work climb.