Prophoto profile - printing? Please help!!

[alley.cat]

Hi guys, I usually edit my photos in sRGB, since I don't understand much about Adobe RGB & ProPhoto. By accident I found a quite interesting color combination - unfortunately my picture was in ProPhoto profile, and so when I tried to recreate the combination on an sRGB picture, I got very different result.

I decided to complete that serie of pictures in ProPhoto, and after I finished I converted them into sRGB, by which the colors stayed the same.

I'll have to give the pictures to my client for print on Monday and so I'm very concerned whether they'd get the exact same colors as they see on the monitor? Or at least somewhat similar...I realize ProPhoto has got a broader color palete, and while the same layer combination gave me different results in sRGB, I'm really worried they'd get crappy colors when they print the files out...

Can you please help ASAP??

Thanks!!!