Yes the larger the knife the harder it is to manipulate.
Most of the ones I make have the ability to be sharpened on the top edge, but I only do it on request of the customers so I know, they know what they are getting and won't get a surprise when they work the knives.
I have made a couple with six inch blades with stainless handles and they are very slow to work, and the handles are just as dangerous as the blade.
In aluminum, that is a totally different story, as the longer aluminum handles make up in length the weight the don't have for being made of aluminum. They can really FLY!!
In fact, for use, the four to four and a half inch blades are about the best. The three inch in stainless is not bad, but it looses something in aluminum, but I have found a solution to that problem.
I have found that by adding stainless steel set screws to the bottom of the aluminum handles in the last one or two holes of the skeletonized pattern increases the weight just enough to make the three to five inch models in aluminum work really well.
Baring several unforseen problesm of late, I should have a couple of knives with the modification out to my "tester" sometime next week.
Regards to All
ChuckG