The only rods mount currently shipping for the HM700 seems to be Zacuto's Zephyr 700.
Zephyr700 - Zacuto (http://store.zacuto.com/Zephyr700.html)
This is what we had on one of the cinema rigs in the NAB09 JVC booth. The other had a solution from Arri that is compatible with a V-plate.

Apparently Cavision (http://www.cavision.com/) is working on a revised rod system as well, but I haven't heard about Chrosziel (http://www.chrosziel.com) yet.

ADDENDUM: It appears Vocas (http://www.vocas.com/) has a HM700 compatible 15mm rods solution now as well.