Derby house boots? Sizing

[LegOn]

Does anyone have these boots? What do the foot sizes come up like? Sometimes I'm a 5 & sometimes 6 - 5.5 in Ariats!!

They are out of stock in the 6, is it worth risking the 5 or do they come up small?

https://www.rideawaystore.com/en-UK/Derby-House-Classic-Long-Riding-Boots/r5048476.htm?colour=Black

 

[AFB]

I've had other Derby House boots before and found they came up small. Also the quality was terrible.

 

[poiuytrewq]

Ah! Now I had a pair of long leather kinpurnie boots in my regular size 5 and they were fine, very comfy (once broken in, they rubbed my heel badly at first) and lasted forever.
When I did finally replace them though one boot was a good cm shorter than the other so if you do buy check before you wear!