charliehall: As a matter of fact, Rav Herzog started his doctoral research trying to corroborate the Radzyner techeles. He only came to the conclusion that the chilazon was the Murex later when his research uncovered the fact that the Radzyner was cheated by the chemist he worked with.
Patur aval assur: Those who wear techeles for the most part (Rav Schachter is an exception) hold that they are doing it to be yotze a safek. So, since “???? ???? ???? ?? ???? ” he can be yotze the safek without worrying about bal tigra on the other pairs.
BTW, anyone who claims to know why Rav Scheinberg wears so many pairs of tzitzis is just speculating. Two of his grandchildren have told me personally that he has never told anyone why.