1. Ah, I will go and read further about the SMRT$ once my eyes regain normal sight Yeah they have explanation about it but I guess reading fine print in their T&Cs for too long gives me blurry eyes.
2. Regarding ERP and CEPAS acceptance in dual mode IU, it should have been 'mostly' integrated by September 2009 (well, according to LTA). Just in case it may interest you, should you choose to change/upgrade, it is $150. Not bad for one-time inconvenience
My old Honda Civic was also without dual mode IU because it was first purchased in 90's and I was being silly trying my luck to use EZ Link card with CEPAS and ERP logo in it when I first got it in 2009. Of course it didn't work but at least I tried and I learned