Tri-Spark is now and always has been specified to use resistor caps OR wires. I do that but when I've experimented with neither there were no issues.
Tri-Spark Tri-0002 (Triples), Tri-0005a (Clockwise), and Tri-0005b (Counter Clockwise) when used will
OLD PODtronics has no problem but soon after PODtronics was sold (don't remember when) and more where made, they started causing missing problems and Tri-Spark released an in-line noise filter (choke) that resolved the problem. Still later the PODtronics being produced made so much noise that the filter did not resolved it.
Today, the Tri-0006 is used for twins that are clockwise or counterclockwise. I quit using PODtronics long ago and switched them all the Tri-Spark VR-0030 (MOSFET). There no noise issues with any Tri-Spark ignition and VR-0030. I don't know if the Tri-0006 is affected by the PODtronics induced noise.
I did test a Tri-0005b with both resistor wire and caps at one point - it was actually an accident - everything worked fine.
CAVEAT: Many use NKG plugs. NKG does not produce plugs with the correct gap for standard Lucas coils. Norton specifies a plug gap of .023" to .028" (manual 065146). Triumph specifies .025" (manual 99-0947) and BSA specified .020" to .025" (manual 00-4175). Triumph and BSA used 12-volt coils and Norton 6-volt coils. I have no idea whether the 6- or 12-volt coils produce a higher voltage spark, but I set my plug gaps to .025". If you simply install NKG BPR6ES, BPR7ES, BPR8ES, BP6ES, BP7ES, BP8ES without setting the gap, your gap is too wide and resistance may cause a problem whether resistance wire, cap or both. A BPR6ES (Stock Number 7131) is factory set to .035" - way too wide. The BPR7ES (Stock Number 5534) and the BPR8ES (Stock Number 3923) are factory set to .031" (All per NKG - I haven't checked but I know they are all too wide).
AFAIK, all Champion standard and resistor plugs appropriate for a Commando come factory set at .025" gap.