The Chive, Scallion, Leek, Shallot and Blur were all designed by Ken Onion and are considered all part of the same family that shares (to a greater/lesser degree) his classic recurve blade shape.
The Shallot (1840) has a 3.5" blade. The Blur (1670) has a 3.375" blade. The clips on both the Shallot and Blur are reversible for tip up or down carry.
All of them, except the Shallot which was discontinued in 2017, are still sold by Kershaw, which is unfortunate because I think the Shallot was the best of the bunch.
Here's a pic of the 1st one that I purchased back in the late 90's or early 2000's, I forget exactly when.
Anyway, I end up losing that one but bought it back along w/6 others to create a nice mini-collection of Shallots.
Although discontinued, the Shallot can still be found in the 2ndary market. In "new" or "like new" condition, the basic black/silver models will cost you around $100-150 (rarer versions can cost much more).
It will probably take you some time to find one. I've seen the them most often on EB. In fact, that's where I bought most of mine.
I only recall seeing a couple offered here on BF in the past 2-3 years. In fact, they were a pair of silver/black Shallots w/ damascus blades, which are extremely rare and were being offered for a very low price. I had to pay a lot more later for mine.
A new Blur sells for around $75-100 depending on the type of steel and style. It is widely available from online dealers. So, if you want a Kershaw over 3" that's currently in production that shares the same design/lineage as the Scallion, your only other choice is the Blur.