I'm not averse to the look you were trying to convey but agree with you that it should be done with a lounge suit rather than a dinner jacket. In the last year I've grown quite fond of patterned shirts, which I find don't go well with ties but can be made to work with a dark suit for a dressed up casual look. Or to put my views on this whole topic another way: I really like wearing suits and tailored jackets. It would be a shame to only be able to wear them on occasions when I want to wear a tie. As fond as I am of ties, I don't feel that a suit has to be reliant on one to look good.