Measurement out of my Vibro Labs Veritas coupler (note that it does not match IEC 711 coupler standards and has only a pseudo-711-like compensation with diffuse-field target applied, but it should give you a general idea of the sound signature and is especially good for comparative purpose). Both IEMs measured with the included silicone tips (as these are also the tips I use for listening).
What I'm hearing though:
Tonality: Just as it can be seen on the graph, the SE846's bass emphasis starts much lower - its focus lays really mainly on the sub-bass, whereas the T.F 10 has also a good amount of upper bass.
The T.F 10 has got thin and little bright-ish mids, the SE846 has lusher which are darker.
The T.F 10's treble is more splashy (and metallic), whereas the SE846 (white treble filters) is more gentle in comparison, though it has some sort of treble peak as well.
Treble extension - well, the graph shows it and it's also what I hear - the SE846 does not have the best >10kHz sparkle (it extends only 1-2 kHz greater than the SE425 in my ears), whereas the T.F 10 has got the better extension in the super-treble area above 10 kHz.
Resolution: Not even close, the SE846 is clearly superior. Much more details, better texture, more arid sub-bass. Overall sound is clearly more authentic and natural on the Shure's side.
Soundstage: I perceive the T.F 10's as elliptical and the SE846's as more circular. Instrument placement, separation and the ability to display empty space are better with the Shure.
I hope my quick comparison is somewhat helpful.