I disagree with this. Maybe were just exposed to different crowds, but trust me, the VAST majority of "die-hard" Daryl fans aren't gonna go out and buy the comics if he's introduced in them. Do I know this for a fact? No. But I'm very sure of this notion.
Like I said before, he's a heart-throb. Spend a day on reddit's WD sub where there's over 70k active members, and every single Daryl post (and trust me, there's no shortage), are of teen girls Googling over him and saying "they'd stop watching the show if he got killed off". Outside of Reddit, you know who talks about Daryl the most at my job? The middle-aged mothers.
His character is great, and probably in my top 3 on the show, but he's just that, great for the show, not the comic.
Trust me, bringing him into the comic will not boost the comic book industry.
IDK ... I just sold $2k worth of Walking Dead comics to a middle aged mother named Fiona. It was very strange b/c we talked on the phone about what pressing was, where she can get her comics pressed before she slabbed the raw comics and how to get SS services. The Walking Dead has changed all the rules (stereotypes) for who's reading/buying comics.
I'm with Nico on this. All exposure is good exposure. Given that 12-15M watched the Season 3 opener, it would only take a small proportion of those people wanting to see further adventures with Daryl to help the comic market.