I am in favour of Mr. Siksay's motion too. In my opinion, It is a simple desire on the committee's part to reconcile work and family. It an excellent message to send to witnesses, especially since these committee meetings are held during the day. We do not want it to be impossible for them to appear because they have children and family obligations. That must not be a reason for them to be unable to come and testify before the committee.
In the spirit of reconciling work and family, it seems reasonable to me to pay child care expenses. Unlike my colleague Mr. Trost, I do not think we can compare children and toothpaste.