Parallel ignition systems, anybody tried running one?

I was mulling over running a std. or DC Orange box parallel to a DC Chrome box system for the street, I have ideas,, but would like to hear from somebody who has done/tried this. Reasons being the Chrome box is supposed to be used with a .25ohm ballast & not below 2,000rpm for extended periods, idling at a cruise, the drive thru, traffic, etc ....