[MapProxy] French IGN WMTS configuration in MapProxy

[Yves Jacolin (Free)]

Hello list,

I am testing French IGN WMTS (aka geoportail v3) with mapproxy to reproject 
tiles to french projection (WMTS is in 3857).

I am using global_geodetic_sqrt2 or GLOBAL_MERCATOR from the default config 
file. Source is a WMTS :
geoportail:
    type: tile
    http:
      ssl_no_cert_checks: True
    url: http://login:mdp@gpp3-
wxs.ign.fr/<key>/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=ORTHOIMAGERY.ORTHOPHOTOS&TILEMATRIXSET=PM&TILEMATRIX=%(z)s&TILEROW=%(y)s&TILECOL=%(x)s&FORMAT=image%%2Fjpeg&STYLE=normal

layers is:
  - name: gpp-ortho
    title: Mon ortho geoportail
    sources: [gpp-cache]

Here is the result:
http://www.freeimagehosting.net/fqrgk

Does someone use wmts gpp in mapProxy successfully? Do you have some feedback 
about my configuration?

thanks,

Y.