By the way, Embarc is NOT HVC, it's HGVC even though trades cannot be made between Hilton & Embarc unless in HGV Max. This should be in the HGVC sub-forum.
"It's not resort/weeks based like a traditional timeshare, it's a pure points scheme with no home resort. I looked into it and decided not to purchase, even if it was free, due to very high maintenance fees and difficulty booking high season time, especially ski time in Whistler that was my prime motivation for looking into this."
Echino is of course entitled to his opinion but the maintenance fees are very reasonable for a points-based timeshare of this caliber. Easy & low-cost ($250 to transfer a contract) to buy into (no deed, no notary or 3rd party required to manage transaction) and very easy to divest with some or full return on your purchase price if bought resale - our member Facebook Embarc Ads group is very active.
There are 9 resorts + access to 5 more in Europe, ability to join Interval (using points to exchange), or SFX Resorts. Very few "fees" of the type Hilton charges (guest certificates = 0, saving points = 0, borrowing points = 0, etc). Rules and guidelines are generally less than Hilton and easy to understand.
We don't have "tiers" as many other timeshares do - each point has the same value (no Diamond, Gold, or limited weeks, you can book any number of days - 6+ at 11 months out from checkin, 5 or less at 6 months) and the same cost. More points gets you a longer stay / larger room / peak vs off-season stay, so if you find you don't have enough, it's easy to buy more or alternatively, rent the needed number from another member (at point fee cost in our group) who knows they're not going to use theirs ($35 per transfer or $0 fee if you take over an existing booking with a guest certificate). Lots of interesting bookings, including Whistler during peak ski season, can be gotten from other members at "cost".
There are no fixed weeks, so that can be perceived as a disadvantage but all members are on equal footing and it's first come first served.
Hilton has not been exercising ROFR since acquisition (over 2 years now).
I've answered the DM request for you.