Just checked out some Tiagos in person for the first time. They've piqued my interest.
Yeah, like some have been saying, they're not as chunky as they can look in photos. The heel is pretty big in my opinion, but it's not ridiculous.
The toebox is really rounded, though. I usually have a better flick with pointier-toed shoes and since these are so round, I can't see it working out. Regardless, I'm still thinking about it.