I didn't experience the light leaks others have done. Same issues as you'd find with Ektachrome itself - the exposure latitude is limited, so choose your quarry [excuse the pun] carefully.
AW processed for me, but given how many DIY 'E6' kits claim to be optimised for scanning and give denser transparencies than true E6, I was surprised to find these were oddly a struggle to scan as they were quite dark, but projected really really well - given dipping a toe into projection was the real aim of the game rather than scanning (else I'd just use a far cheaper colour negative film, like any sane person), this was a pleasant surprise!