Comment 8 for bug 896060

My issue with leaving it as is is that you could use Wall as "wall" and thus make IC useless
While I agree defending against IC is tricky sometimes [depends on what used on tbh] I feel it'd make the wall too strong - unless you cannot do what could in TS and turn wall on-off repeatedly so could use almost non-stop
If that ability isn't possible then perhaps the original behaviour would be ok