10mm offset seatpost would indeed be perfect.
The problem with the seatposts available is that there isn't much in the 10-15mm offset region. This is especially a problem when most seatposts have a clamping area of 50mm nowadays "to spread the clamping load". So even with 70mm claming area on the saddle rails that only leaves 20mm adjustment and sods law I need my saddle somewhere between a 0 offset post and 25mm offset post. The 15mm offset Thomson works best for me on my frame to not be at the very extreme end of the rails one way or another and 10mm would also work great.
Maybe someone can correct me but I can not find a nice light 10-15mm layback seatpost besides a tuned Thomson Masterpiece. The MCFK comes closest but is 20mm offset and 349 Euro...
Maybe someone can help add to the list of light set back posts available? (weight in 31.6x350mm- taken from R2 Bike/ Fairwheel weights)
AX Lightness AX2200--- 25mm offset??? --- 114g --- 467 Euro
Schmolke TLO Setback --- 25mm offset --- 116g --- 495 Euro
MCFK --- 20mm offset --- 119g --- 349 Euro
AX Lightness Daedalus--- 25mm offset??? --- 140g --- 355 Euro
New Ultimate Aluminium Setback --- 20mm??? --- 147g --- 120 Euro
Engage Revit --- 25mm offset --- 155g --- 195 Euro
USE Alien Carbon --- 10mm Offset --- 188g (claimed) --- 94 Euro
Bontrager XXX --- 20mm offset --- 190g --- 160 Euro
Thomson Masterpiece --- 15mm offset --- 193g --- 175 Euro
KCNC SC Pro Lite --- 18mm offset --- 203g --- 71 Euro
ENVE --- 25mm offset --- 195g --- 280 Euro
Crank Brother Cobalt 11 --- 20mm offset --- 200g+??? --- 219 Euro
Ritchey Superlogic --- 25mm offset --- 200g+??? --- 200 Euro
The pattern is too much offset for too much money. If not then too heavy
I thought the Engage Revit (AX spin off company) would be perfect but I could not get on with the large set back. A 10-15mm offset version of this would be ideal
10-15mm layback post, under 140g, under 200 Euro would be perfect
As with BManX, if I were nearby I would happily supply an extra pair of hands