A few questions are:
Is a polymer sealant equivalent to a blue or black Sharpie ( MBZ500 verses SRL test )?
Is there a point ( complete curing) that renders a polymer more resistant to mild chemical cleansing agents? Solvent content?
Can a polymer sealant bond properly (completely) to a surface contaminated with a Sharpie-like material? Validity of test conclusions.
Nevertheless, extremely interesting thread which I believe is positive critical feedback to the manufacturer and their possible re-evaluation of product's (NXT's) contents and their effects on potential usage as a LSP for sealant users. All good.
