Long spikes only for indoors ? ? ?

[dayxwalker]

What do you guys think of only allowing long spike tyres for indoors on club nights ? Reason is the expence of mini pins and spikes ! The long spikes work ok just not as good perhaps as pin or spikes ? I mean chris p does ok with them ?
I know we don't want to start running a stock class or anything but since it's just club night then one restriction is not to bad ?
If new members came they could use what they like until they need new ones ?

Anyway it's just an idea ?