To my knowledge they have not. However, I only have limited knowledge of what other parliaments have done. For example, the Memorial Chamber is truly unique to the Canadian Parliament. The architect, John A. Pearson, truly had a unique vision. One of the reasons, often not very well known, why the Peace Tower was given its name was because of Mr. Pearson's actions. At first there was a huge debate, people wanted to call it the Victory Tower, but it was Mr. Pearson who really pushed for the Peace Tower, along with the help of the Prime Minister at the time, Mr. King.
With respect to the cost, the cost of the panels will be covered by a current Public Works program, that is the architectural sculpture program for Centre Block. Mr. White is willing to take on the project and have it completed by September. He calculated that it would take eight weeks of work. The cost would be minimal. In fact, the cost is only that of making and replacing the panels.