the dallara is large, but it can be flicked out very fast and easily due to the ball lock. i dont know if self defense is a concern for you, but the dallara can be deployed faster and easier than the regular endura. i like my dallara a lot, its very strong and hefty. the ball lock is a nice alternative to the traditional lock back as well.
if you carry a manix, then a dallara shouldnt be a problem for you.
both are good knives, try to get both eventually as both models are really different from eachother but both are great.