500N, why?
My colonel still looked like a bag o'sh1t whether he used his web belt to keep his stomach in or a SB with a shoulder strap to hold it up!
The lack of belt clips could be that they were hard to come by, or the guard commander could not afford to have them fitted, or there was not enough time after he had been joed.
In all the No 1s I had (one new and two second hand) I never had sword clips. I never carried a sword on any parade either and my last parade I am pleased to say was 36 years ago.