Kinda disappointed, the comic is so out of place in the existing narrative
Geralt learns about Yennefer and starts to head south is changed into him going west to Vergen to hunt a big turtle
Saskia is a half breed with 2 forms but the comic says she's purebred and can assume many forms
Iorveth just ditches Vergen for no reason
In Witcher 3 Eskel says there's fighting in Lormark (Upper Aedirn) which I thought was an implication that Saskia was leading a guerrilla war, but apparently Vergen just got razed and Saskia ran away
Witcher 3 Geralt has dialogue where he asks Phillipa about Saskia and var Attre about Vergen, but those lines are now pointless
Geralt doesn't end up retiring with Yennefer
I could be more nitpicky and complain about why "magic rope" is a stupid device to implement in a comic considering how useful it would be but you get the idea of my post.
I think if they replaced Geralt with Iorveth in the comic and showed something else like an internal conflict in Vergen that results in Iorveth splitting from Saskia it would've been a lot better.
The HoS expansion was super great though, really looking forward to B&W, I just sincerely hope it doesn't come with a comic.