Here are some specs on the 940-1..
Overall Length: 7.87" Blade Length: 3.40" Blade Thickness: 0.12" Blade Material: CPM-S90V Hardness: 59-61 RC Blade Style: Reverse Tanto Blade Grind: Flat Blade Finish: Stonewash Edge Type: Plain Handle Length: 4.47" Handle Thickness: 0.41"
Here are the specs on the Sebenzas..
SPECIFICATIONS:
Blade Material:
CPM S35VN Stainless Steel
Blade Hardness:
58-59 RC
Blade Length:
Large - 3.625" (92 mm)
Small - 2.94" (75 mm)
Blade Thickness:
0.125" (3.175 mm)
Overall Length:
Large - 8.335" (212 mm)
Small - 6.875" (175 mm)
Handle Material:
6Al4V Titanium
Handle Thickness:
Large - 0.150" (3.81 mm)
Small - 0.125" (3.175 mm)
I would say this...from the specs you can see that the 940 handle length is
4.47".
the small Sebbie is 6.875" (total length) - 2.94" (blade length) =
3.935" handle length.
Your large Sebbie has a handle length of
4.71".
IMO, the small will be too small. At least, that is my opinion. Your hand size will be somewhat different.
Here is the small, large, and the Zaan.
Here is a large Sebbie in my hand...
...and a small Sebbie in my hand...
I cannot use a handle that is this short (the small). When I push on the lockbar to unlock the blade, the knife tends to move forward OUT of my hand.
Of course, your hand-size may be different.
I have found that I cannot use a handle that is shorter than 4.0" and I'm much happier with 4.2-4.4" as a minimum. I am quite happy with a Spyderco Sage 2, for instance... a handle-length of ~4.2".
Good luck.