I can't comment about Tomcats at all since I have never handled or shot one. Seen em, kind of chunky is my impression. That is not to say that Berreta does not make some fine mouse guns. I have a Beretta Jetfire - in my opinion, the best little .25 caliber mouse gun there is - better than a BB gun? You bet! Better than a 9mm Kahr MK9 - oh my - no way.
But I do have a Kel-Tec P32. It is definitely not junk. It is a well engineered, very thin and light, .32 caliber handgun. I don't think it is particularly long term robust. A Glock is robust. But if all you do with a P32 is on occasion, practice fire a few rounds, and then rely on him only in a close range emergency, the little P32 will be okay.
I always like to say - the P32 is the ultimate semi-automatic derringer. Good for close range. Only when needed. Hide in plain sight. In that respect, the P32 as a hideout gun is better than a Tomcat, no matter what the construction - because it is lighter, thinner, and more easily concealed. The P32 unloaded weighs less than 7 ounces. I have carabineers that almost weigh as much. It floats.
I also believe that Titanium guns are a bit of a gimmick. I do not believe they are worth the extra cost. Steel and modern Aluminum alloys, plus the revolution in plastics, sort of put Titanium on that plateau of - I just got to have one because it is different. Just my two cents.