This might be alright if it also gives you the option to use a stylus. With smaller buttons and such it can be a bigger pain than it already is. Obviously you still need multi touch, but stylus addition would be good.
from what i can gather the current tech in the iphone doesn't allow stylus use. due to the nature of the interface using the conduction thing instead of using pressure (eg if you poke it with something none finger it won't pick it up )