Oh so true! But still a smaller knife does have its many uses. Not saying the big knife is the end all of all things to do all things, just it can do what it needs to do more jack of all tradesie stuff than a smaller knife can do more niche nicely can do.
You have a great knife combo there! I don't got a 15 but my 5 I find can do smaller knife tasks just as or better than most smaller knives can. Good thing I got the 5 when I got one before they went bye bye. Same as my 4. Wish I could of gotten another 4, so I have to get by with my three 9s and a 5 and two 2s.
But I got the smaller knives covered literally all over the place, even giving them to the younger nieces and nephews have just begun to dent the over stock pile. (Classic Bucks and Gerber folders usually)