As someone else once said, Baldur's Gate 2's original romances for the male characters are all part of it's "sexual healing" simulator. There isn't a single romance for a male character that doesn't involve your manly-man character making the female characters somehow "better" by the presence of your gender.
Viconia's, all things said, is probably the LEAST objectionable of these. That said, I didn't find Aerie's *too* bad, as it's mostly just about being a loving and supportive partner who doesn't push her too fast, and who doesn't let her leap ahead too urgently.
With that said, I've not been able to complete any of the new romances yet, other than maybe Hexxats? But then maybe not? I don't really know. Hexxat's a cagey beast.
Anyhow, I always figured that Jaheira wasn't really Gorion's adventuring companion, simply a good friend from the Harpers. She's only level 1 when you pick her up, so she can't be that experienced.
@Beowulf "It is just a lame throw in for beamdog to salute Canada and their way of life."
Uh, what? First off, Beamdog is a Canadian company--I can literally drive there from my house. Second, what does that even mean? So a company acknowledges a marginalized group actually exists, and it's just a "throw in?" This is nonsensical at best, inflammatory at worst.
Finally, I agree that the last 10-20 minutes were a bit of a slog. But then so were the Hell Trials, and literally most of Baldur's Gate 1's main storyline. I have to say the pacing of Dragonspear is much better than Baldur's Gate 1 and 2. Exploration is all fine and dandy, but I can't stand games where you have to march back through a dungeon just to get to the exit. That's why I hate dungeons without back doors--it's just padding, because back in the day having a game with "90 hours of playtime!" was a big selling point. They would just neglect to tell you that you spent 60 hours of that play time backtracking through wilderness. Baldur's Gate was particularly heinous in this regard.
Anyways, OP, to answer your question... yes, it's absolutely worth it. Hell, people paid upwards of $60 for skyrim when it first game out, and it had bugs like mad. Apparently the new Fallout isn't much better. This'll only burn a hole in your pocket to the size of $22.00, and that's money well spent in my opinion.