Are you talking about these?
Hosa pedal effect coupler - Shop sales, stores & prices at TheFind.com
I would be afraid that they could bend the input jacks of the pedals. I think good quality short cables are better.
That being said, I no longer use wireless. I find it to be WAY more expensive in the long run due to battery consumption. I also have a need to use the stereo output on my JP's so I can switch between magnetic and piezo.