[Closed] Mixing tyre brands

I ripped my front tyre on some excellent trails at Winterfold yesterday and so now need to replace it. In a bid to economise I was considering throwing on a different brand (as I have many odd spares in the shed). This feels a little bit wrong from an aesthetic point of view but is it more likely to catch me out when riding? Anyone else run a mongrel set? Thinking nics on back and xr4s on front.