I have always liked the tactile feel of the half stop, and find it keeps me more mindful of closing position even when my mind is on other tasks. It is actually a practical experience that solidified my love for them that I posted about it here:
http://www.bladeforums.com/forums/showthread.php/1153888-An-overview-of-nine-new-slip-joints
"Cleanliness of these new knives is my next point. All of the knives were pretty gritty upon initial opening. So out came the baby oil and hot water. This "experiment" cleaning 18 blades and two punches led me to re-confirm one thing- I prefer half stops. Not only was I more comfortable opening the half stop blades when wet/oily, but they cleaned much, MUCH faster than the cam actioned knives. I'm sure this leads to less wear on the spring/tang junction due to less grit becoming stuck and having to be worked out. Because all walk and talk were similar, and the knives were from a wide variety of models/makers I feel that this is a function of tang types more so than my bias coming through. I also learned that I prefer same side nail nicks- something I had not found of myself before!"
I find that the corners of the half stop help push debris away, while a can action still squishes the material attempted to be removed like a rolling pin, it still works, but is less effective. After the nine knife experience my mind was pretty well made up. Plus the additional sense of security the half stops allowed when covered in baby oil did not hurt either. Not a deal breaker, but I've always wished that Whittlers were half stopped on the main blades as well.
It's not like you're going to use the knife with the blade half open.
I disagree, as I often use my half stop knives in the half stop position when wanting to choke up on the blade. The blade is held with the same tension that it is when open/closed, you can reinforce the handle into the palm of your hand rather than have excess handle past your wrist in usual choked up grip, and I just find it more comfortable. Maybe I'm the only one, but I use my half stops as an active feature of the knives. I've been meaning to post a new thread asking how many use their knifes at the half stop? Try cleaning your nails with the knife fully open, then try when utilizing the half stop to give a quick show of what I am talking about.
And with Wharncliffes your index finger rides along the spine beautifully as reinforcement:
(Edit to add- the Northwoods Whittler is not a half stop knife, but was in the right position and already on photobucket, so used here for illustration purposes!)
You have no right to complain about poorly executed half stops in a custom knife unless you specified to the maker that you wanted them flush. This is a perfect example of where a buyer needs to know what they want, know the makers work and communicate their desires.
I absolutely disagree with you here. If you are buying a custom that means you are paying for hand crafted care, which to me includes lack of gaps, well fitted bolster:scale:liner connections, domed or flush pins, and proper walk and talk, which means flush half stops. It's the same as saying that you should let the maker know that you don't want wavy grind lines- it's a given part of the job. No maker to my knowledge states that they leave half stops uneven, so it's ludicrous to think that it should have to be explained/communicated.