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IF both parents have good lacing, and your goal is blue laced silvers, then yes, a splash laced red with a silver laced will work. a silver laced roo over splash laced red hens would be best, you'll get silver hens (possibly red leakage) with blue lacing, then just go back to the silver laced with the best type to improve color and type, and just keep a blue in the mix.
That is the cross I have a splash laced red pullet with a SLW roo. 100% blue babies from that cross. If you breed a BLRW with a SLW you will still get 50/50 but it would be slower.