Yes you don't need to use the OEM clamp. I did however and now I see that is why my inner OEM shield bolts were not long enough. The clamp caused the springs to bulge a bit keeping the shield further away from clip nuts on header...my bad. Having said that my joint is good and tight and does not leak...
Sunshine and my ride is all I need...
2018 Ducati Supersport S, "Solana"
2017 Ducati Supersport S, "Annabella"
2006 Honda CBR600RR, "Red-Rocket"
1990 Honda VFR400 , "Baby V"
and a dozen more previously owned bikes