Mixed Simplified-Traditional script on Twins' album cover - why? On the album art for Twins' first album (我們的紀念冊), 紀 and 冊 are written as simplified characters. What's the reason for this (aside from artistic ones), and would people notice this?

Here's the album art in question:


EDIT: Found another mixed script album art (雙生兒). This does not look like sloppy font to me...
A lot of "Simplified" characters existed as short-hand forms of Chinese characters long before the "simplification" of the written language in the PRC. Conversely, the PRC hasn't given up "traditional" characters completely. I wouldn't be surprised to see some mixing here and there.