Can a SuperSU (System) be converted on the fly to systemless?

Quick question.... I am experiment with something, I want to see if I have tasker and a system SuperSU can I change the state of SuperSu to be systemless temporarily. I need to mimic this in tasker for something I want to experiment with

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Wished for stock rooted ROM 4 Verizon Note 4 retail nail Dev converted.

Can someone point me to a rooted stock ROM for lollipop or better yet marshmallow for the Note 4 with the retail to Dev conversion? I didn't have the retail converted it to death using dr.cool's very well written post.now I have some emotion nightly ROM. My dream is to have a fully functional rooted marshmallow ROM. If such thing exists and can be flashed X Odin,adb or any other method with the tutorial for dummies please point me to that ROM for download. Thank you in advance. By the way this is the smn910v Qualcomm processor.