Anyone have feedback on Uston Simple Plus-Minus system?

Hi group,

beginning and aspiring counter - researched and used KO at 8-deck AC games yet noticing that with an IRC of -28, it takes a long time for shoe to turn positive, if ever.

Ran into the Simple Plus-Minus from Ustons' Million Dollar Blackjack and it seems pretty straight forward, with minor rule variations and no true count conversion.

I'm wondering if anyone has any feedback with respect to this count. All criticism would be appreciated...

Thanks,

M.