Isn't there a risk you will end up with a patchwork interpretation made up of bits of other people's interpretations?
And what exactly is wrong with that?
No, to be a Horowitz clone you would have to listen to nothing but Horowitz. Your argument is flawed because you assume that you can't make it work. This is wrong, there is no reason why you can't "borrow" details from pianists and incorporate them in your own interpretation. I think it's better to learn this way than have a teacher tell you "do this here and that there etc". Of course individual creativity is better but this can be bland if you are unaware of what can be done with a phrase etc.
I don't know at what stage of learning you are at. However, most mature pianists are not interested in other's interpretations. Isn't there a risk you will end up with a patchwork interpretation made up of bits of other people's interpretations?
in the event of doing this, Tash, even if you arent intending to, you will probably (without noticing) have other peoples characteristics put into your pieces. and people may be able to hear this.
even if it is a mix of other peoples interpretation it is still sort of copying in a way and no matter what level you are, you shouldnt really copy.