By-knives sheathed in longsword scabbards

[Al Muckart]

Greetings all,

Looking through The Medieval Soldier, I saw a few mentions of  
longsword scabbards built with integral sheaths for by knife and  
pricker. I am conscious of the fact that that book is 16 years old now  
and reflects the state of research at that time, and that these are  
something I've only seen clearly in reproduction equipment and not in  
artwork so I am curious as to whether these were common on longsword  
scabbards or whether they'd be something unusual, with the personal  
knives more commonly carried separately or sheathed with a dagger or  
messer?

Am I looking at the wrong artwork, or are these recreations based on  
extant examples I'm not aware of (since I live about as far from  
European museums as it is possible to get).

Thanks.
-- 
Alasdair Muckart | William de Wyke | http://wherearetheelves.blogspot.com
"Any sufficiently advanced stupidity is indistinguishable from malice"
	-- James D. Macdonald