1 INTRODUCTION

2 DATA ACQUISITION AND ANALYSIS
2.1 The SLUGGS sample
2.2 DEIMOS spectra
2.3 Stellar metallicities
2.4 GC metallicities
2.5 Stellar and GC metallicity scales
2.6 Comparison between spectroscopic and photometric GC metallicity radial profiles

3 RESULTS

4 DISCUSSION
4.1 Stellar metallicity profiles at large radii
4.2 What is the origin of GC metallicity bimodality?
4.3 Fraction of accreted GCs

5 CONCLUSIONS