I've started to get airplane flights and rental car stuff reserved. Will NOT be a cheap trip, so if you want to go, make your plans now. Air North RT Vancouver to Whitehorse is about $410, then you need to have a rental car to get to Skagway. A bit cheaper if you have the time to go via the ferry but not sure about scheudles that time of year. I could not take more than a week so I had to get the flights via Whitehorse.
Last time I did this was 10 years ago and it is worth it, now that the CATS rotary is not likely to run again (or at least for a while).
I will arrive midnight the Sat/Sun before and stay the week, so if someone wants to share rental car costs leave a PM.