I think combining clip arts to make a logo is not fair:
Manfred's fonts are free for private and charity use. They are even free for commercial use - but if there's any profit, pls make a donation to organizations like Doctors Without Borders.
These fonts can NOT be included in any compilation CDs, disks or products, either commercial or shareware unless prior permission granted.
All typefaces were created by Manfred Klein 2001-2008.
Good for you sir. I think it's ok for the fonts to be not so unique because as you said anybody can buy the license for the font. But using clip arts for the graphic logo would not be wise since logo should be unique and sole license and single copyrighted only. Like I'm not allowed to use "M" style of McDonalds logo and trademark but its ok for me to buy a license for the fonts used by McDonalds. Just my humble opinion.