Having the GEC (earth) connection visable for the electrical inspector may be a concern. A lot of times, the footings, etc., are already backfilled before any elec inspections are called for.
Here in NJ, the Building Inspector IS required to inspect the ufer connection(s) when he does footing/foundation inspection(s).
Also, keep in mind that the electricians may not be 'on site' for the footings/foundations to install any grounding. Additionally, there may be changes in locations, or a GEC installed at a 'wrong' location.