I'm surprised I haven't seen that boat around here, guess it didn't get out much last summer, or is new to the area...
I believe Dan Y and Rey helped deliver one up the East Coast a few years ago, I think they liked it, other than the fact that the aluminum hull was "noisy"...
Only one I was ever aboard was a 43' owned by an Italian, in the Marina Hemingway in Havana... Very cool boat, as utilitarian as they are on the outside, it was beautifully finished below... Those French really do know what works with boats, lots of storage space for cruising gear, and of course a very functional galley both at anchor, and at sea. I liked what I saw of the boat, but of course the issue of ultimate stability is the big question with these boats... Evans has mentioned that they seem to have a tendency to get knocked down and lay on their side for a while in places like the Southern Ocean, I don't really care for the sound of that (grin)... On the other hand, Jimmy Cornell has had his to Antarctica, so who knows? Herb McCormick sailed with Cornell in the Adriatic for a week or so, Herb liked the boat a lot...
In addition to the Seguin 40, one of my all-time favorite boats was the Clearwater 36 built by Holby Marine. Like the Seguin, only a handful were ever built, so they are extremely rare. I love the look of Craig Walters' designs, just beautiful boats, here's a link to another design of his I once saw down in Morehead City, very interesting boat...
It's a mystery to me why modern builders seem to have completely abandoned the idea of keel-centerboarders like yours, Sabre and Tartan are one of the few to have built them in recent memory. They just seem to make so much sense for the type of cruising so many of us do. Really is a pity that many of the true shoal draft options nowadays are coming from a builder like Island Packet, those sorts of designs really give shoal draft a bad reputation in terms of sailing performance. One of the coolest boats I've seen in recent years was the 46 that Swan did a few years ago targeting the American market, with a lifting keel. I thought that was an awesome boat, yet I believe they only sold a few of them... Of course, the twin rudders may have put some cruisers off (rightly so), and I wouldn't want to go aground at speed with a lifting keel, but I still thought it was a very cool boat - could have been the ultimate boat for the rich guy who sails New England or the Chesapeake in the summer, and theFlorida/ Bahamas in the winter...
Still, for a dream boat that I could conceivably afford, I keep coming back to a K/CB Sabre 38 Mark II, that would be a perfect boat for me... Really is a pity about that whole worldwide financial meltdown/recession thing, I think that has probably put one of those out of reach for me financially for the time being... (grin)